91626804 has 36 divisors (see below), whose sum is σ = 245238084. Its totient is φ = 28745472.

The previous prime is 91626803. The next prime is 91626811. The reversal of 91626804 is 40862619.

It can be written as a sum of positive squares in 2 ways, for example, as 26501904 + 65124900 = 5148^2 + 8070^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×91626804² = 16790942422508832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91626803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74247 + ... + 75470.

It is an arithmetic number, because the mean of its divisors is an integer number (6812169).

Almost surely, 2^91626804 is an apocalyptic number.

It is an amenable number.

91626804 is an abundant number, since it is smaller than the sum of its proper divisors (153611280).

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

91626804 is a wasteful number, since it uses less digits than its factorization.

91626804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149744 (or 149739 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 91626804 is about 9572.1890913208. The cubic root of 91626804 is about 450.8245032132.

The spelling of 91626804 in words is "ninety-one million, six hundred twenty-six thousand, eight hundred four".