64762487 has 4 divisors (see below), whose sum is σ = 64853280. Its totient is φ = 64671696.

The previous prime is 64762427. The next prime is 64762519. The reversal of 64762487 is 78426746.

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

It is a cyclic number.

It is not a de Polignac number, because 64762487 - 2¹⁴ = 64746103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64762427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44318 + ... + 45755.

It is an arithmetic number, because the mean of its divisors is an integer number (16213320).

Almost surely, 2^64762487 is an apocalyptic number.

64762487 is a deficient number, since it is larger than the sum of its proper divisors (90793).

64762487 is an equidigital number, since it uses as much as digits as its factorization.

64762487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90792.

The product of its digits is 451584, while the sum is 44.

The square root of 64762487 is about 8047.5143367378. The cubic root of 64762487 is about 401.5822475625.

The spelling of 64762487 in words is "sixty-four million, seven hundred sixty-two thousand, four hundred eighty-seven".