7447699264 has 28 divisors (see below), whose sum is σ = 15288653700. Its totient is φ = 3595440128.

The previous prime is 7447699261. The next prime is 7447699267. The reversal of 7447699264 is 4629967447.

It is an interprime number because it is at equal distance from previous prime (7447699261) and next prime (7447699267).

It can be written as a sum of positive squares in 2 ways, for example, as 6113988864 + 1333710400 = 78192^2 + 36520^2 .

It is a super-2 number, since 2×7447699264² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a junction number, because it is equal to n+sod(n) for n = 7447699199 and 7447699208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7447699261) 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, 2004529 + ... + 2008240.

Almost surely, 2^7447699264 is an apocalyptic number.

It is an amenable number.

7447699264 is an abundant number, since it is smaller than the sum of its proper divisors (7840954436).

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

7447699264 is a wasteful number, since it uses less digits than its factorization.

7447699264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4012810 (or 4012800 counting only the distinct ones).

The product of its digits is 18289152, while the sum is 58.

The square root of 7447699264 is about 86300.0536732162. The cubic root of 7447699264 is about 1952.8731928244.

The spelling of 7447699264 in words is "seven billion, four hundred forty-seven million, six hundred ninety-nine thousand, two hundred sixty-four".