68761880 has 48 divisors (see below), whose sum is σ = 170069760. Its totient is φ = 25002560.

The previous prime is 68761877. The next prime is 68761883. The reversal of 68761880 is 8816786.

It is an interprime number because it is at equal distance from previous prime (68761877) and next prime (68761883).

It is a super-2 number, since 2×68761880² = 9456392282268800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68761883) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2264 + ... + 11943.

It is an arithmetic number, because the mean of its divisors is an integer number (3543120).

Almost surely, 2^68761880 is an apocalyptic number.

It is an amenable number.

68761880 is an abundant number, since it is smaller than the sum of its proper divisors (101307880).

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

68761880 is a wasteful number, since it uses less digits than its factorization.

68761880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14240 (or 14225 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 44.

The square root of 68761880 is about 8292.2783358978. The cubic root of 68761880 is about 409.6842303939.

The spelling of 68761880 in words is "sixty-eight million, seven hundred sixty-one thousand, eight hundred eighty".