64682551 has 4 divisors (see below), whose sum is σ = 64921504. Its totient is φ = 64443600.

The previous prime is 64682533. The next prime is 64682561. The reversal of 64682551 is 15528646.

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 64682551 - 2²¹ = 62585399 is a prime.

It is a deceptive number, since it divides R_64682550.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64682551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64682561) 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, 119070 + ... + 119611.

It is an arithmetic number, because the mean of its divisors is an integer number (16230376).

Almost surely, 2^64682551 is an apocalyptic number.

64682551 is a deficient number, since it is larger than the sum of its proper divisors (238953).

64682551 is a wasteful number, since it uses less digits than its factorization.

64682551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238952.

The product of its digits is 57600, while the sum is 37.

The square root of 64682551 is about 8042.5463007682. The cubic root of 64682551 is about 401.4169559129.

The spelling of 64682551 in words is "sixty-four million, six hundred eighty-two thousand, five hundred fifty-one".