70945980 has 96 divisors (see below), whose sum is σ = 234393600. Its totient is φ = 15690240.

The previous prime is 70945967. The next prime is 70945997. The reversal of 70945980 is 8954907.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 10296 + ... + 15744.

It is an arithmetic number, because the mean of its divisors is an integer number (2441600).

Almost surely, 2^70945980 is an apocalyptic number.

70945980 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70945980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117196800).

70945980 is an abundant number, since it is smaller than the sum of its proper divisors (163447620).

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

70945980 is a wasteful number, since it uses less digits than its factorization.

70945980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5499 (or 5497 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 70945980 is about 8422.9436659638. The cubic root of 70945980 is about 413.9767309380.

The spelling of 70945980 in words is "seventy million, nine hundred forty-five thousand, nine hundred eighty".