361664401 has 4 divisors (see below), whose sum is σ = 413330752. Its totient is φ = 309998052.

The previous prime is 361664393. The next prime is 361664417. The reversal of 361664401 is 104466163.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 104466163 = 571 ⋅182953.

It is not a de Polignac number, because 361664401 - 2³ = 361664393 is a prime.

It is a super-2 number, since 2×361664401² = 261602277901377602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (361664461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25833165 + ... + 25833178.

It is an arithmetic number, because the mean of its divisors is an integer number (103332688).

Almost surely, 2^361664401 is an apocalyptic number.

It is an amenable number.

361664401 is a deficient number, since it is larger than the sum of its proper divisors (51666351).

361664401 is an equidigital number, since it uses as much as digits as its factorization.

361664401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51666350.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 361664401 is about 19017.4761995382. The cubic root of 361664401 is about 712.4732898985.

The spelling of 361664401 in words is "three hundred sixty-one million, six hundred sixty-four thousand, four hundred one".