7520643 has 12 divisors (see below), whose sum is σ = 11698960. Its totient is φ = 4628016.

The previous prime is 7520633. The next prime is 7520659. The reversal of 7520643 is 3460257.

It is a happy number.

It is not a de Polignac number, because 7520643 - 2⁴ = 7520627 is a prime.

It is a super-2 number, since 2×7520643² = 113120142266898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7520603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32023 + ... + 32256.

Almost surely, 2^7520643 is an apocalyptic number.

7520643 is a deficient number, since it is larger than the sum of its proper divisors (4178317).

7520643 is a wasteful number, since it uses less digits than its factorization.

7520643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64298 (or 64295 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 7520643 is about 2742.3790766413. The cubic root of 7520643 is about 195.9228055722.

The spelling of 7520643 in words is "seven million, five hundred twenty thousand, six hundred forty-three".