70081816 has 16 divisors (see below), whose sum is σ = 150175440. Its totient is φ = 30035040.

The previous prime is 70081813. The next prime is 70081853. The reversal of 70081816 is 61818007.

It is a super-2 number, since 2×70081816² = 9822921867715712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70081813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 625675 + ... + 625786.

It is an arithmetic number, because the mean of its divisors is an integer number (9385965).

Almost surely, 2^70081816 is an apocalyptic number.

It is an amenable number.

70081816 is an abundant number, since it is smaller than the sum of its proper divisors (80093624).

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

70081816 is a wasteful number, since it uses less digits than its factorization.

70081816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1251474 (or 1251470 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 31.

The square root of 70081816 is about 8371.4882786754. The cubic root of 70081816 is about 412.2890327405.

The spelling of 70081816 in words is "seventy million, eighty-one thousand, eight hundred sixteen".