68862690 has 128 divisors (see below), whose sum is σ = 206599680. Its totient is φ = 16194816.

The previous prime is 68862683. The next prime is 68862691. The reversal of 68862690 is 9626886.

It is a super-2 number, since 2×68862690² = 9484140148072200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (68862691) 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 63 ways as a sum of consecutive naturals, for example, 80304 + ... + 81156.

It is an arithmetic number, because the mean of its divisors is an integer number (1614060).

Almost surely, 2^68862690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68862690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103299840).

68862690 is an abundant number, since it is smaller than the sum of its proper divisors (137736990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68862690 is a wasteful number, since it uses less digits than its factorization.

68862690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905 (or 899 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 68862690 is about 8298.3546561954. The cubic root of 68862690 is about 409.8843417570.

The spelling of 68862690 in words is "sixty-eight million, eight hundred sixty-two thousand, six hundred ninety".