7513987 has 16 divisors (see below), whose sum is σ = 8820000. Its totient is φ = 6338304.

The previous prime is 7513981. The next prime is 7513991. The reversal of 7513987 is 7893157.

7513987 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 7513987 - 2¹⁵ = 7481219 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7513981) 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, 6639 + ... + 7687.

It is an arithmetic number, because the mean of its divisors is an integer number (551250).

Almost surely, 2^7513987 is an apocalyptic number.

7513987 is a deficient number, since it is larger than the sum of its proper divisors (1306013).

7513987 is a wasteful number, since it uses less digits than its factorization.

7513987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110.

The product of its digits is 52920, while the sum is 40.

The square root of 7513987 is about 2741.1652631682. The cubic root of 7513987 is about 195.8649892793.

The spelling of 7513987 in words is "seven million, five hundred thirteen thousand, nine hundred eighty-seven".