63400671 has 16 divisors (see below), whose sum is σ = 94187520. Its totient is φ = 42149880.

The previous prime is 63400651. The next prime is 63400679. The reversal of 63400671 is 17600436.

It is not a de Polignac number, because 63400671 - 2⁵ = 63400639 is a prime.

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 (63400679) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7276 + ... + 13406.

It is an arithmetic number, because the mean of its divisors is an integer number (5886720).

Almost surely, 2^63400671 is an apocalyptic number.

63400671 is a deficient number, since it is larger than the sum of its proper divisors (30786849).

63400671 is a wasteful number, since it uses less digits than its factorization.

63400671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6523 (or 6517 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 63400671 is about 7962.4538303214. The cubic root of 63400671 is about 398.7474799944.

The spelling of 63400671 in words is "sixty-three million, four hundred thousand, six hundred seventy-one".