7662333640 has 32 divisors (see below), whose sum is σ = 18566425080. Its totient is φ = 2829169152.

The previous prime is 7662333631. The next prime is 7662333641. The reversal of 7662333640 is 463332667.

It can be written as a sum of positive squares in 4 ways, for example, as 3665818116 + 3996515524 = 60546^2 + 63218^2 .

It is a super-2 number, since 2×7662333640² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 7662333593 and 7662333602.

It is not an unprimeable number, because it can be changed into a prime (7662333641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7367109 + ... + 7368148.

Almost surely, 2^7662333640 is an apocalyptic number.

It is an amenable number.

7662333640 is an abundant number, since it is smaller than the sum of its proper divisors (10904091440).

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

7662333640 is a wasteful number, since it uses less digits than its factorization.

7662333640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14735281 (or 14735277 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 40.

The square root of 7662333640 is about 87534.7567541031. The cubic root of 7662333640 is about 1971.4556858375.

The spelling of 7662333640 in words is "seven billion, six hundred sixty-two million, three hundred thirty-three thousand, six hundred forty".