67661504 has 28 divisors (see below), whose sum is σ = 134654544. Its totient is φ = 33732864.

The previous prime is 67661501. The next prime is 67661533. The reversal of 67661504 is 40516676.

It is not an unprimeable number, because it can be changed into a prime (67661501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24077 + ... + 26739.

Almost surely, 2^67661504 is an apocalyptic number.

67661504 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

67661504 is a deficient number, since it is larger than the sum of its proper divisors (66993040).

67661504 is a wasteful number, since it uses less digits than its factorization.

67661504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3072 (or 3062 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 67661504 is about 8225.6613108005. The cubic root of 67661504 is about 407.4871166589.

It can be divided in two parts, 676 and 61504, that multiplied together give a square (41576704 = 6448²).

The spelling of 67661504 in words is "sixty-seven million, six hundred sixty-one thousand, five hundred four".