67904780 has 24 divisors (see below), whose sum is σ = 143237808. Its totient is φ = 27040448.

The previous prime is 67904779. The next prime is 67904789. The reversal of 67904780 is 8740976.

It is a super-2 number, since 2×67904780² = 9222118293696800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (67904789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2939 + ... + 12018.

It is an arithmetic number, because the mean of its divisors is an integer number (5968242).

Almost surely, 2^67904780 is an apocalyptic number.

It is an amenable number.

67904780 is an abundant number, since it is smaller than the sum of its proper divisors (75333028).

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

67904780 is a wasteful number, since it uses less digits than its factorization.

67904780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15193 (or 15191 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 67904780 is about 8240.4356680943. The cubic root of 67904780 is about 407.9749039414.

The spelling of 67904780 in words is "sixty-seven million, nine hundred four thousand, seven hundred eighty".