64238265 has 144 divisors (see below), whose sum is σ = 146397888. Its totient is φ = 26780544.

The previous prime is 64238249. The next prime is 64238299. The reversal of 64238265 is 56283246.

64238265 is a `hidden beast` number, since 642 + 3 + 8 + 2 + 6 + 5 = 666.

It is not a de Polignac number, because 64238265 - 2⁴ = 64238249 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 773914 + ... + 773996.

It is an arithmetic number, because the mean of its divisors is an integer number (1016652).

Almost surely, 2^64238265 is an apocalyptic number.

64238265 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

64238265 is an abundant number, since it is smaller than the sum of its proper divisors (82159623).

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

64238265 is a wasteful number, since it uses less digits than its factorization.

64238265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 111 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 64238265 is about 8014.8777283250. The cubic root of 64238265 is about 400.4957706914.

The spelling of 64238265 in words is "sixty-four million, two hundred thirty-eight thousand, two hundred sixty-five".