68866437 has 4 divisors (see below), whose sum is σ = 91821920. Its totient is φ = 45910956.

The previous prime is 68866423. The next prime is 68866463. The reversal of 68866437 is 73466886.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 68866437 - 2⁸ = 68866181 is a prime.

It is a super-2 number, since 2×68866437² = 9485172290149938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68866477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11477737 + ... + 11477742.

It is an arithmetic number, because the mean of its divisors is an integer number (22955480).

Almost surely, 2^68866437 is an apocalyptic number.

It is an amenable number.

68866437 is a deficient number, since it is larger than the sum of its proper divisors (22955483).

68866437 is a wasteful number, since it uses less digits than its factorization.

68866437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22955482.

The product of its digits is 1161216, while the sum is 48.

The square root of 68866437 is about 8298.5804207708. The cubic root of 68866437 is about 409.8917759170.

The spelling of 68866437 in words is "sixty-eight million, eight hundred sixty-six thousand, four hundred thirty-seven".