63679765 has 16 divisors (see below), whose sum is σ = 79770096. Its totient is φ = 48755200.

The previous prime is 63679757. The next prime is 63679789. The reversal of 63679765 is 56797636.

It can be written as a sum of positive squares in 8 ways, for example, as 4297329 + 59382436 = 2073^2 + 7706^2 .

It is not a de Polignac number, because 63679765 - 2³ = 63679757 is a prime.

It is a super-2 number, since 2×63679765² = 8110224940910450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7935 + ... + 13795.

It is an arithmetic number, because the mean of its divisors is an integer number (4985631).

Almost surely, 2^63679765 is an apocalyptic number.

It is an amenable number.

63679765 is a deficient number, since it is larger than the sum of its proper divisors (16090331).

63679765 is a wasteful number, since it uses less digits than its factorization.

63679765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5960.

The product of its digits is 1428840, while the sum is 49.

The square root of 63679765 is about 7979.9602129334. The cubic root of 63679765 is about 399.3317279028.

The spelling of 63679765 in words is "sixty-three million, six hundred seventy-nine thousand, seven hundred sixty-five".