63666465 has 8 divisors (see below), whose sum is σ = 101866368. Its totient is φ = 33955440.

The previous prime is 63666437. The next prime is 63666469. The reversal of 63666465 is 56466636.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 63666465 - 2¹¹ = 63664417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63666469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2122201 + ... + 2122230.

It is an arithmetic number, because the mean of its divisors is an integer number (12733296).

Almost surely, 2^63666465 is an apocalyptic number.

It is an amenable number.

63666465 is a deficient number, since it is larger than the sum of its proper divisors (38199903).

63666465 is a wasteful number, since it uses less digits than its factorization.

63666465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4244439.

The product of its digits is 466560, while the sum is 42.

The square root of 63666465 is about 7979.1268319284. The cubic root of 63666465 is about 399.3039248176.

The spelling of 63666465 in words is "sixty-three million, six hundred sixty-six thousand, four hundred sixty-five".