91620627 has 16 divisors (see below), whose sum is σ = 140424960. Its totient is φ = 52049952.

The previous prime is 91620589. The next prime is 91620637. The reversal of 91620627 is 72602619.

It is not a de Polignac number, because 91620627 - 2¹⁹ = 91096339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91620637) 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, 8977 + ... + 16242.

It is an arithmetic number, because the mean of its divisors is an integer number (8776560).

Almost surely, 2^91620627 is an apocalyptic number.

91620627 is a deficient number, since it is larger than the sum of its proper divisors (48804333).

91620627 is a wasteful number, since it uses less digits than its factorization.

91620627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25402.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 91620627 is about 9571.8664324154. The cubic root of 91620627 is about 450.8143722420.

The spelling of 91620627 in words is "ninety-one million, six hundred twenty thousand, six hundred twenty-seven".