67398972 has 24 divisors (see below), whose sum is σ = 157414656. Its totient is φ = 22444848.

The previous prime is 67398971. The next prime is 67398973. The reversal of 67398972 is 27989376.

It is an interprime number because it is at equal distance from previous prime (67398971) and next prime (67398973).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67398971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15103 + ... + 19049.

It is an arithmetic number, because the mean of its divisors is an integer number (6558944).

Almost surely, 2^67398972 is an apocalyptic number.

It is an amenable number.

67398972 is an abundant number, since it is smaller than the sum of its proper divisors (90015684).

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

67398972 is a wasteful number, since it uses less digits than its factorization.

67398972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5377 (or 5375 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 51.

The square root of 67398972 is about 8209.6876919893. The cubic root of 67398972 is about 406.9594061098.

The spelling of 67398972 in words is "sixty-seven million, three hundred ninety-eight thousand, nine hundred seventy-two".