70681772 has 12 divisors (see below), whose sum is σ = 141363600. Its totient is φ = 30292176.

The previous prime is 70681771. The next prime is 70681777. The reversal of 70681772 is 27718607.

70681772 is an admirable number.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (70681771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1262147 + ... + 1262202.

It is an arithmetic number, because the mean of its divisors is an integer number (11780300).

Almost surely, 2^70681772 is an apocalyptic number.

It is an amenable number.

70681772 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

70681772 is a wasteful number, since it uses less digits than its factorization.

70681772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2524360 (or 2524358 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 38.

The square root of 70681772 is about 8407.2452087470. The cubic root of 70681772 is about 413.4621985176.

The spelling of 70681772 in words is "seventy million, six hundred eighty-one thousand, seven hundred seventy-two".