68764571 has 4 divisors (see below), whose sum is σ = 68799000. Its totient is φ = 68730144.

The previous prime is 68764529. The next prime is 68764573. The reversal of 68764571 is 17546786.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17546786 = 2 ⋅8773393.

It is a cyclic number.

It is not a de Polignac number, because 68764571 - 2¹⁰ = 68763547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68764573) 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, 14021 + ... + 18278.

It is an arithmetic number, because the mean of its divisors is an integer number (17199750).

Almost surely, 2^68764571 is an apocalyptic number.

68764571 is a deficient number, since it is larger than the sum of its proper divisors (34429).

68764571 is a wasteful number, since it uses less digits than its factorization.

68764571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34428.

The product of its digits is 282240, while the sum is 44.

The square root of 68764571 is about 8292.4405936974. The cubic root of 68764571 is about 409.6895746626.

The spelling of 68764571 in words is "sixty-eight million, seven hundred sixty-four thousand, five hundred seventy-one".