70681392 has 60 divisors (see below), whose sum is σ = 206419824. Its totient is φ = 22535040.

The previous prime is 70681367. The next prime is 70681421. The reversal of 70681392 is 29318607.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7359 + ... + 13982.

Almost surely, 2^70681392 is an apocalyptic number.

70681392 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

70681392 is an abundant number, since it is smaller than the sum of its proper divisors (135738432).

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

70681392 is a wasteful number, since it uses less digits than its factorization.

70681392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21378 (or 21369 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 70681392 is about 8407.2226091617. Note that the first 3 decimals coincide. The cubic root of 70681392 is about 413.4614575631.

Adding to 70681392 its reverse (29318607), we get a palindrome (99999999).

The spelling of 70681392 in words is "seventy million, six hundred eighty-one thousand, three hundred ninety-two".