68926487 has 18 divisors (see below), whose sum is σ = 82361808. Its totient is φ = 57488592.

The previous prime is 68926457. The next prime is 68926489. The reversal of 68926487 is 78462986.

It is not a de Polignac number, because 68926487 - 2¹² = 68922391 is a prime.

It is a super-2 number, since 2×68926487² = 9501721220322338, 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 (68926489) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 398333 + ... + 398505.

It is an arithmetic number, because the mean of its divisors is an integer number (4575656).

Almost surely, 2^68926487 is an apocalyptic number.

68926487 is a deficient number, since it is larger than the sum of its proper divisors (13435321).

68926487 is an equidigital number, since it uses as much as digits as its factorization.

68926487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407 (or 227 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 50.

The square root of 68926487 is about 8302.1977210857. The cubic root of 68926487 is about 410.0108801396.

The spelling of 68926487 in words is "sixty-eight million, nine hundred twenty-six thousand, four hundred eighty-seven".