63416645 has 4 divisors (see below), whose sum is σ = 76099980. Its totient is φ = 50733312.

The previous prime is 63416611. The next prime is 63416671. The reversal of 63416645 is 54661436.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18887716 + 44528929 = 4346^2 + 6673^2 .

It is a cyclic number.

It is not a de Polignac number, because 63416645 - 2⁶ = 63416581 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6341660 + ... + 6341669.

It is an arithmetic number, because the mean of its divisors is an integer number (19024995).

Almost surely, 2^63416645 is an apocalyptic number.

It is an amenable number.

63416645 is a deficient number, since it is larger than the sum of its proper divisors (12683335).

63416645 is a wasteful number, since it uses less digits than its factorization.

63416645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12683334.

The product of its digits is 51840, while the sum is 35.

The square root of 63416645 is about 7963.4568498862. The cubic root of 63416645 is about 398.7809657461.

It can be divided in two parts, 63 and 416645, that multiplied together give a triangular number (26248635 = T₇₂₄₅).

The spelling of 63416645 in words is "sixty-three million, four hundred sixteen thousand, six hundred forty-five".