408661360 has 20 divisors (see below), whose sum is σ = 950137848. Its totient is φ = 163464512.

The previous prime is 408661321. The next prime is 408661361. The reversal of 408661360 is 63166804.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408661361) 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, 2554054 + ... + 2554213.

Almost surely, 2^408661360 is an apocalyptic number.

408661360 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

408661360 is an abundant number, since it is smaller than the sum of its proper divisors (541476488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

408661360 is a wasteful number, since it uses less digits than its factorization.

408661360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5108280 (or 5108274 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 408661360 is about 20215.3743472635. The cubic root of 408661360 is about 742.0864903067.

The spelling of 408661360 in words is "four hundred eight million, six hundred sixty-one thousand, three hundred sixty".