7145864 has 16 divisors (see below), whose sum is σ = 14616720. Its totient is φ = 3248080.

The previous prime is 7145863. The next prime is 7145867. The reversal of 7145864 is 4685417.

It is not an unprimeable number, because it can be changed into a prime (7145863) 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, 40514 + ... + 40689.

It is an arithmetic number, because the mean of its divisors is an integer number (913545).

Almost surely, 2^7145864 is an apocalyptic number.

It is an amenable number.

7145864 is an abundant number, since it is smaller than the sum of its proper divisors (7470856).

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

7145864 is a wasteful number, since it uses less digits than its factorization.

7145864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81220 (or 81216 counting only the distinct ones).

The product of its digits is 26880, while the sum is 35.

The square root of 7145864 is about 2673.1748913979. The cubic root of 7145864 is about 192.6126983868.

The spelling of 7145864 in words is "seven million, one hundred forty-five thousand, eight hundred sixty-four".