90664405401 has 8 divisors (see below), whose sum is σ = 123834309984. Its totient is φ = 58968718880.

The previous prime is 90664405399. The next prime is 90664405421. The reversal of 90664405401 is 10450446609.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90664405401 - 2¹ = 90664405399 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90664405401.

It is not an unprimeable number, because it can be changed into a prime (90664405421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 368554371 + ... + 368554616.

It is an arithmetic number, because the mean of its divisors is an integer number (15479288748).

Almost surely, 2^90664405401 is an apocalyptic number.

It is an amenable number.

90664405401 is a deficient number, since it is larger than the sum of its proper divisors (33169904583).

90664405401 is a wasteful number, since it uses less digits than its factorization.

90664405401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737109031.

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 90664405401 in words is "ninety billion, six hundred sixty-four million, four hundred five thousand, four hundred one".