401361615 has 32 divisors (see below), whose sum is σ = 744560640. Its totient is φ = 204751008.

The previous prime is 401361559. The next prime is 401361617. The reversal of 401361615 is 516163104.

401361615 is a `hidden beast` number, since 40 + 1 + 3 + 6 + 1 + 615 = 666.

It is not a de Polignac number, because 401361615 - 2⁷ = 401361487 is a prime.

It is a super-2 number, since 2×401361615² = 322182291990816450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401361617) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61527 + ... + 67736.

It is an arithmetic number, because the mean of its divisors is an integer number (23267520).

Almost surely, 2^401361615 is an apocalyptic number.

401361615 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

401361615 is a deficient number, since it is larger than the sum of its proper divisors (343199025).

401361615 is a wasteful number, since it uses less digits than its factorization.

401361615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129300 (or 129294 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 401361615 is about 20034.0114555223. The cubic root of 401361615 is about 737.6413916404.

The spelling of 401361615 in words is "four hundred one million, three hundred sixty-one thousand, six hundred fifteen".