64563950 has 24 divisors (see below), whose sum is σ = 131007240. Its totient is φ = 23477600.

The previous prime is 64563949. The next prime is 64563959. The reversal of 64563950 is 5936546.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64563959) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58145 + ... + 59244.

It is an arithmetic number, because the mean of its divisors is an integer number (5458635).

Almost surely, 2^64563950 is an apocalyptic number.

64563950 is an abundant number, since it is smaller than the sum of its proper divisors (66443290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64563950 is a wasteful number, since it uses less digits than its factorization.

64563950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117412 (or 117407 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 38.

The square root of 64563950 is about 8035.1695688392. The cubic root of 64563950 is about 401.1714616780.

It can be divided in two parts, 6 and 4563950, that multiplied together give a triangular number (27383700 = T₇₄₀₀).

The spelling of 64563950 in words is "sixty-four million, five hundred sixty-three thousand, nine hundred fifty".