45663865 has 16 divisors (see below), whose sum is σ = 59543568. Its totient is φ = 33417216.

The previous prime is 45663851. The next prime is 45663889. The reversal of 45663865 is 56836654.

It can be written as a sum of positive squares in 8 ways, for example, as 9339136 + 36324729 = 3056^2 + 6027^2 .

It is a cyclic number.

It is not a de Polignac number, because 45663865 - 2⁵ = 45663833 is a prime.

It is a super-3 number, since 3×45663865³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian 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, 4237 + ... + 10453.

It is an arithmetic number, because the mean of its divisors is an integer number (3721473).

Almost surely, 2^45663865 is an apocalyptic number.

It is an amenable number.

45663865 is a deficient number, since it is larger than the sum of its proper divisors (13879703).

45663865 is a wasteful number, since it uses less digits than its factorization.

45663865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6348.

The product of its digits is 518400, while the sum is 43.

The square root of 45663865 is about 6757.5043470204. The cubic root of 45663865 is about 357.4299078521.

The spelling of 45663865 in words is "forty-five million, six hundred sixty-three thousand, eight hundred sixty-five".