7640712 has 24 divisors (see below), whose sum is σ = 20693790. Its totient is φ = 2546880.

The previous prime is 7640707. The next prime is 7640723. The reversal of 7640712 is 2170467.

7640712 is a `hidden beast` number, since 7 + 640 + 7 + 12 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5225796 + 2414916 = 2286^2 + 1554^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 52989 + ... + 53132.

Almost surely, 2^7640712 is an apocalyptic number.

7640712 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

7640712 is an abundant number, since it is smaller than the sum of its proper divisors (13053078).

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

7640712 is a wasteful number, since it uses less digits than its factorization.

7640712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106133 (or 106126 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 7640712 is about 2764.1837854962. The cubic root of 7640712 is about 196.9599581926.

The spelling of 7640712 in words is "seven million, six hundred forty thousand, seven hundred twelve".