7512645 has 16 divisors (see below), whose sum is σ = 13737600. Its totient is φ = 3434304.

The previous prime is 7512641. The next prime is 7512667. The reversal of 7512645 is 5462157.

It is not a de Polignac number, because 7512645 - 2² = 7512641 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7512641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35670 + ... + 35879.

It is an arithmetic number, because the mean of its divisors is an integer number (858600).

Almost surely, 2^7512645 is an apocalyptic number.

It is an amenable number.

7512645 is a deficient number, since it is larger than the sum of its proper divisors (6224955).

7512645 is a wasteful number, since it uses less digits than its factorization.

7512645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71564.

The product of its digits is 8400, while the sum is 30.

The square root of 7512645 is about 2740.9204658290. The cubic root of 7512645 is about 195.8533280726.

It can be divided in two parts, 75 and 12645, that added together give a triangular number (12720 = T₁₅₉).

The spelling of 7512645 in words is "seven million, five hundred twelve thousand, six hundred forty-five".