97156980 has 36 divisors (see below), whose sum is σ = 294710052. Its totient is φ = 25908480.

The previous prime is 97156967. The next prime is 97156993. The reversal of 97156980 is 8965179.

97156980 is a `hidden beast` number, since 9 + 7 + 1 + 569 + 80 = 666.

It is an interprime number because it is at equal distance from previous prime (97156967) and next prime (97156993).

It can be written as a sum of positive squares in 2 ways, for example, as 9771876 + 87385104 = 3126^2 + 9348^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×97156980³ (a number of 25 digits) contains 333 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 269701 + ... + 270060.

Almost surely, 2^97156980 is an apocalyptic number.

97156980 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

97156980 is an abundant number, since it is smaller than the sum of its proper divisors (197553072).

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

97156980 is a wasteful number, since it uses less digits than its factorization.

97156980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539776 (or 539771 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 97156980 is about 9856.8240321110. The cubic root of 97156980 is about 459.7178168506.

The spelling of 97156980 in words is "ninety-seven million, one hundred fifty-six thousand, nine hundred eighty".