47400661 has 24 divisors (see below), whose sum is σ = 60060672. Its totient is φ = 36616800.

The previous prime is 47400653. The next prime is 47400671. The reversal of 47400661 is 16600474.

It is not a de Polignac number, because 47400661 - 2³ = 47400653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47400601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 161631 + ... + 161923.

It is an arithmetic number, because the mean of its divisors is an integer number (2502528).

Almost surely, 2^47400661 is an apocalyptic number.

It is an amenable number.

47400661 is a deficient number, since it is larger than the sum of its proper divisors (12660011).

47400661 is a wasteful number, since it uses less digits than its factorization.

47400661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513 (or 502 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 47400661 is about 6884.8137955939. The cubic root of 47400661 is about 361.9051800332.

The spelling of 47400661 in words is "forty-seven million, four hundred thousand, six hundred sixty-one".