70631772 has 12 divisors (see below), whose sum is σ = 164807496. Its totient is φ = 23543920.

The previous prime is 70631749. The next prime is 70631773. The reversal of 70631772 is 27713607.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70631773) 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, 2942979 + ... + 2943002.

It is an arithmetic number, because the mean of its divisors is an integer number (13733958).

Almost surely, 2^70631772 is an apocalyptic number.

It is an amenable number.

70631772 is an abundant number, since it is smaller than the sum of its proper divisors (94175724).

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

70631772 is a wasteful number, since it uses less digits than its factorization.

70631772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5885988 (or 5885986 counting only the distinct ones).

The product of its (nonzero) digits is 12348, while the sum is 33.

The square root of 70631772 is about 8404.2710570281. The cubic root of 70631772 is about 413.3646816899.

The spelling of 70631772 in words is "seventy million, six hundred thirty-one thousand, seven hundred seventy-two".