361561657 has 8 divisors (see below), whose sum is σ = 373050720. Its totient is φ = 350199840.

The previous prime is 361561639. The next prime is 361561687. The reversal of 361561657 is 756165163.

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 361561657 - 2²⁷ = 227343929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (361561687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26023 + ... + 37420.

It is an arithmetic number, because the mean of its divisors is an integer number (46631340).

Almost surely, 2^361561657 is an apocalyptic number.

It is an amenable number.

361561657 is a deficient number, since it is larger than the sum of its proper divisors (11489063).

361561657 is a wasteful number, since it uses less digits than its factorization.

361561657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63623.

The product of its digits is 113400, while the sum is 40.

The square root of 361561657 is about 19014.7747028462. The cubic root of 361561657 is about 712.4058154770.

The spelling of 361561657 in words is "three hundred sixty-one million, five hundred sixty-one thousand, six hundred fifty-seven".