49664673 has 6 divisors (see below), whose sum is σ = 71737874. Its totient is φ = 33109776.

The previous prime is 49664669. The next prime is 49664683. The reversal of 49664673 is 37646694.

It can be written as a sum of positive squares in only one way, i.e., 29844369 + 19820304 = 5463^2 + 4452^2 .

It is not a de Polignac number, because 49664673 - 2² = 49664669 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49664623) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2759140 + ... + 2759157.

Almost surely, 2^49664673 is an apocalyptic number.

It is an amenable number.

49664673 is a deficient number, since it is larger than the sum of its proper divisors (22073201).

49664673 is a wasteful number, since it uses less digits than its factorization.

49664673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5518303 (or 5518300 counting only the distinct ones).

The product of its digits is 653184, while the sum is 45.

The square root of 49664673 is about 7047.3167234062. The cubic root of 49664673 is about 367.5777317179.

The spelling of 49664673 in words is "forty-nine million, six hundred sixty-four thousand, six hundred seventy-three".