91630355 has 4 divisors (see below), whose sum is σ = 109956432. Its totient is φ = 73304280.

The previous prime is 91630349. The next prime is 91630361. The reversal of 91630355 is 55303619.

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

It is an interprime number because it is at equal distance from previous prime (91630349) and next prime (91630361).

It is not a de Polignac number, because 91630355 - 2¹⁴ = 91613971 is a prime.

It is a super-2 number, since 2×91630355² = 16792243914852050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9163031 + ... + 9163040.

It is an arithmetic number, because the mean of its divisors is an integer number (27489108).

Almost surely, 2^91630355 is an apocalyptic number.

91630355 is a deficient number, since it is larger than the sum of its proper divisors (18326077).

91630355 is a wasteful number, since it uses less digits than its factorization.

91630355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18326076.

The product of its (nonzero) digits is 12150, while the sum is 32.

The square root of 91630355 is about 9572.3745747855. The cubic root of 91630355 is about 450.8303270444.

The spelling of 91630355 in words is "ninety-one million, six hundred thirty thousand, three hundred fifty-five".