400574661 has 8 divisors (see below), whose sum is σ = 534993600. Its totient is φ = 266602752.

The previous prime is 400574609. The next prime is 400574737. The reversal of 400574661 is 166475004.

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

It is not a de Polignac number, because 400574661 - 2⁹ = 400574149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400574761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109660 + ... + 113253.

It is an arithmetic number, because the mean of its divisors is an integer number (66874200).

Almost surely, 2^400574661 is an apocalyptic number.

It is an amenable number.

400574661 is a deficient number, since it is larger than the sum of its proper divisors (134418939).

400574661 is a wasteful number, since it uses less digits than its factorization.

400574661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223515.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 400574661 is about 20014.3613687772. The cubic root of 400574661 is about 737.1589757618.

The spelling of 400574661 in words is "four hundred million, five hundred seventy-four thousand, six hundred sixty-one".