64974459 has 24 divisors (see below), whose sum is σ = 100835280. Its totient is φ = 37058560.

The previous prime is 64974457. The next prime is 64974461. The reversal of 64974459 is 95447946.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (64974457) and next prime (64974461).

It is not a de Polignac number, because 64974459 - 2¹ = 64974457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64974451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 907 + ... + 11435.

It is an arithmetic number, because the mean of its divisors is an integer number (4201470).

Almost surely, 2^64974459 is an apocalyptic number.

64974459 is a deficient number, since it is larger than the sum of its proper divisors (35860821).

64974459 is a wasteful number, since it uses less digits than its factorization.

64974459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10571 (or 10560 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 48.

The square root of 64974459 is about 8060.6736070877. The cubic root of 64974459 is about 402.0199056998.

The spelling of 64974459 in words is "sixty-four million, nine hundred seventy-four thousand, four hundred fifty-nine".