32506913 has 4 divisors (see below), whose sum is σ = 32537748. Its totient is φ = 32476080.

The previous prime is 32506909. The next prime is 32506919. The reversal of 32506913 is 31960523.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30824704 + 1682209 = 5552^2 + 1297^2 .

It is a cyclic number.

It is not a de Polignac number, because 32506913 - 2² = 32506909 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32506919) 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, 13778 + ... + 15963.

It is an arithmetic number, because the mean of its divisors is an integer number (8134437).

Almost surely, 2^32506913 is an apocalyptic number.

It is an amenable number.

32506913 is a deficient number, since it is larger than the sum of its proper divisors (30835).

32506913 is a wasteful number, since it uses less digits than its factorization.

32506913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30834.

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 32506913 is about 5701.4834034662. The cubic root of 32506913 is about 319.1478401349.

The spelling of 32506913 in words is "thirty-two million, five hundred six thousand, nine hundred thirteen".