67977960 has 64 divisors (see below), whose sum is σ = 204482880. Its totient is φ = 18078720.

The previous prime is 67977937. The next prime is 67977967. The reversal of 67977960 is 6977976.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (67977967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76720 + ... + 77600.

It is an arithmetic number, because the mean of its divisors is an integer number (3195045).

Almost surely, 2^67977960 is an apocalyptic number.

67977960 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

67977960 is an abundant number, since it is smaller than the sum of its proper divisors (136504920).

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

67977960 is a wasteful number, since it uses less digits than its factorization.

67977960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1538 (or 1534 counting only the distinct ones).

The product of its (nonzero) digits is 1000188, while the sum is 51.

The square root of 67977960 is about 8244.8747716384. The cubic root of 67977960 is about 408.1214075450.

The spelling of 67977960 in words is "sixty-seven million, nine hundred seventy-seven thousand, nine hundred sixty".