64371249 has 12 divisors (see below), whose sum is σ = 93085200. Its totient is φ = 42865944.

The previous prime is 64371233. The next prime is 64371253. The reversal of 64371249 is 94217346.

64371249 is a `hidden beast` number, since 643 + 7 + 1 + 2 + 4 + 9 = 666.

It is not a de Polignac number, because 64371249 - 2⁴ = 64371233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64371269) 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, 5662 + ... + 12680.

It is an arithmetic number, because the mean of its divisors is an integer number (7757100).

Almost surely, 2^64371249 is an apocalyptic number.

It is an amenable number.

64371249 is a deficient number, since it is larger than the sum of its proper divisors (28713951).

64371249 is a wasteful number, since it uses less digits than its factorization.

64371249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8044 (or 8041 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 64371249 is about 8023.1695108604. The cubic root of 64371249 is about 400.7719447117.

It can be divided in two parts, 64371 and 249, that added together give a triangular number (64620 = T₃₅₉).

The spelling of 64371249 in words is "sixty-four million, three hundred seventy-one thousand, two hundred forty-nine".