7505864 has 8 divisors (see below), whose sum is σ = 14073510. Its totient is φ = 3752928.

The previous prime is 7505863. The next prime is 7505873. The reversal of 7505864 is 4685057.

It can be written as a sum of positive squares in only one way, i.e., 6041764 + 1464100 = 2458^2 + 1210^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (7505863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 469109 + ... + 469124.

Almost surely, 2^7505864 is an apocalyptic number.

It is an amenable number.

7505864 is a deficient number, since it is larger than the sum of its proper divisors (6567646).

7505864 is a wasteful number, since it uses less digits than its factorization.

7505864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938239 (or 938235 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 7505864 is about 2739.6831933638. The cubic root of 7505864 is about 195.7943838438.

The spelling of 7505864 in words is "seven million, five hundred five thousand, eight hundred sixty-four".