97980570 has 128 divisors (see below), whose sum is σ = 274337280. Its totient is φ = 24860160.

The previous prime is 97980563. The next prime is 97980577. The reversal of 97980570 is 7508979.

97980570 is a `hidden beast` number, since 9 + 79 + 8 + 0 + 570 = 666.

It is an interprime number because it is at equal distance from previous prime (97980563) and next prime (97980577).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (97980577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 586627 + ... + 586793.

It is an arithmetic number, because the mean of its divisors is an integer number (2143260).

Almost surely, 2^97980570 is an apocalyptic number.

97980570 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 97980570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137168640).

97980570 is an abundant number, since it is smaller than the sum of its proper divisors (176356710).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97980570 is a wasteful number, since it uses less digits than its factorization.

97980570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277 (or 271 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 45.

The square root of 97980570 is about 9898.5135247672. The cubic root of 97980570 is about 461.0131575398.

The spelling of 97980570 in words is "ninety-seven million, nine hundred eighty thousand, five hundred seventy".