70615980 has 144 divisors (see below), whose sum is σ = 230053824. Its totient is φ = 17487360.

The previous prime is 70615973. The next prime is 70616023. The reversal of 70615980 is 8951607.

70615980 is a `hidden beast` number, since 7 + 0 + 61 + 598 + 0 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a nontrivial repunit in base 413.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 152950 + ... + 153410.

It is an arithmetic number, because the mean of its divisors is an integer number (1597596).

Almost surely, 2^70615980 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70615980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115026912).

70615980 is an abundant number, since it is smaller than the sum of its proper divisors (159437844).

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

70615980 is a wasteful number, since it uses less digits than its factorization.

70615980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536 (or 531 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 70615980 is about 8403.3314822158. The cubic root of 70615980 is about 413.3338724123. Note that the first 3 decimals are identical.

It can be divided in two parts, 7061 and 5980, that added together give a triangular number (13041 = T₁₆₁).

The spelling of 70615980 in words is "seventy million, six hundred fifteen thousand, nine hundred eighty".