7613988 has 12 divisors (see below), whose sum is σ = 17766000. Its totient is φ = 2537992.

The previous prime is 7613981. The next prime is 7613999. The reversal of 7613988 is 8893167.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (7613981) 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, 317238 + ... + 317261.

It is an arithmetic number, because the mean of its divisors is an integer number (1480500).

Almost surely, 2^7613988 is an apocalyptic number.

It is an amenable number.

7613988 is an abundant number, since it is smaller than the sum of its proper divisors (10152012).

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

7613988 is a wasteful number, since it uses less digits than its factorization.

7613988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634506 (or 634504 counting only the distinct ones).

The product of its digits is 72576, while the sum is 42.

The square root of 7613988 is about 2759.3455745883. The cubic root of 7613988 is about 196.7300622332.

The spelling of 7613988 in words is "seven million, six hundred thirteen thousand, nine hundred eighty-eight".