67713780 has 48 divisors (see below), whose sum is σ = 189975744. Its totient is φ = 18021120.

The previous prime is 67713707. The next prime is 67713791. The reversal of 67713780 is 8731776.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44919 + ... + 46401.

It is an arithmetic number, because the mean of its divisors is an integer number (3957828).

Almost surely, 2^67713780 is an apocalyptic number.

67713780 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

67713780 is an abundant number, since it is smaller than the sum of its proper divisors (122261964).

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

67713780 is a wasteful number, since it uses less digits than its factorization.

67713780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2256 (or 2254 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 39.

The square root of 67713780 is about 8228.8383141243. The cubic root of 67713780 is about 407.5920326087.

The spelling of 67713780 in words is "sixty-seven million, seven hundred thirteen thousand, seven hundred eighty".