89640613 has 4 divisors (see below), whose sum is σ = 94358560. Its totient is φ = 84922668.

The previous prime is 89640611. The next prime is 89640667. The reversal of 89640613 is 31604698.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 89640613 - 2¹ = 89640611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89640611) 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, 2358945 + ... + 2358982.

It is an arithmetic number, because the mean of its divisors is an integer number (23589640).

Almost surely, 2^89640613 is an apocalyptic number.

It is an amenable number.

89640613 is a deficient number, since it is larger than the sum of its proper divisors (4717947).

89640613 is a wasteful number, since it uses less digits than its factorization.

89640613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4717946.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 89640613 is about 9467.8726755275. The cubic root of 89640613 is about 447.5431757183.

The spelling of 89640613 in words is "eighty-nine million, six hundred forty thousand, six hundred thirteen".