91612801 has 6 divisors (see below), whose sum is σ = 106570050. Its totient is φ = 78525216.

The previous prime is 91612793. The next prime is 91612811. The reversal of 91612801 is 10821619.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 48316401 + 43296400 = 6951^2 + 6580^2 .

It is not a de Polignac number, because 91612801 - 2³ = 91612793 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 91612801.

It is not an unprimeable number, because it can be changed into a prime (91612811) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 934776 + ... + 934873.

It is an arithmetic number, because the mean of its divisors is an integer number (17761675).

Almost surely, 2^91612801 is an apocalyptic number.

It is an amenable number.

91612801 is a deficient number, since it is larger than the sum of its proper divisors (14957249).

91612801 is a wasteful number, since it uses less digits than its factorization.

91612801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1869663 (or 1869656 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 91612801 is about 9571.4576214911. The cubic root of 91612801 is about 450.8015360723.

The spelling of 91612801 in words is "ninety-one million, six hundred twelve thousand, eight hundred one".