63672945 has 32 divisors (see below), whose sum is σ = 116739840. Its totient is φ = 29030400.

The previous prime is 63672929. The next prime is 63672953. The reversal of 63672945 is 54927636.

It is not a de Polignac number, because 63672945 - 2⁴ = 63672929 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 63672897 and 63672906.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62601 + ... + 63609.

It is an arithmetic number, because the mean of its divisors is an integer number (3648120).

Almost surely, 2^63672945 is an apocalyptic number.

It is an amenable number.

63672945 is a deficient number, since it is larger than the sum of its proper divisors (53066895).

63672945 is a wasteful number, since it uses less digits than its factorization.

63672945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1625.

The product of its digits is 272160, while the sum is 42.

The square root of 63672945 is about 7979.5328810652. The cubic root of 63672945 is about 399.3174714661.

The spelling of 63672945 in words is "sixty-three million, six hundred seventy-two thousand, nine hundred forty-five".