7664472 has 24 divisors (see below), whose sum is σ = 20758140. Its totient is φ = 2554800.

The previous prime is 7664453. The next prime is 7664477. The reversal of 7664472 is 2744667.

7664472 is a `hidden beast` number, since 7 + 6 + 644 + 7 + 2 = 666.

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

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

It is a d-powerful number, because it can be written as 7⁶ + 6 + 6⁸ + 4⁶ + 4⁸ + 7⁸ + 2¹⁵ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7664477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 53154 + ... + 53297.

Almost surely, 2^7664472 is an apocalyptic number.

7664472 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

7664472 is an abundant number, since it is smaller than the sum of its proper divisors (13093668).

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

7664472 is a wasteful number, since it uses less digits than its factorization.

7664472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106463 (or 106456 counting only the distinct ones).

The product of its digits is 56448, while the sum is 36.

The square root of 7664472 is about 2768.4782823782. The cubic root of 7664472 is about 197.1639062951.

The spelling of 7664472 in words is "seven million, six hundred sixty-four thousand, four hundred seventy-two".