63670745 has 32 divisors (see below), whose sum is σ = 83026944. Its totient is φ = 46771200.

The previous prime is 63670723. The next prime is 63670769. The reversal of 63670745 is 54707636.

It is not a de Polignac number, because 63670745 - 2⁸ = 63670489 is a prime.

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

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 63670699 and 63670708.

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, 273149 + ... + 273381.

It is an arithmetic number, because the mean of its divisors is an integer number (2594592).

Almost surely, 2^63670745 is an apocalyptic number.

It is an amenable number.

63670745 is a deficient number, since it is larger than the sum of its proper divisors (19356199).

63670745 is a wasteful number, since it uses less digits than its factorization.

63670745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353.

The product of its (nonzero) digits is 105840, while the sum is 38.

The square root of 63670745 is about 7979.3950271935. The cubic root of 63670745 is about 399.3128723984.

The spelling of 63670745 in words is "sixty-three million, six hundred seventy thousand, seven hundred forty-five".