67398690 has 32 divisors (see below), whose sum is σ = 162192960. Its totient is φ = 17924544.

The previous prime is 67398689. The next prime is 67398703. The reversal of 67398690 is 9689376.

It is a happy number.

It is a super-2 number, since 2×67398690² = 9085166827432200, which contains 22 as substring.

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, 9081 + ... + 14739.

It is an arithmetic number, because the mean of its divisors is an integer number (5068530).

Almost surely, 2^67398690 is an apocalyptic number.

67398690 is an abundant number, since it is smaller than the sum of its proper divisors (94794270).

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

67398690 is a wasteful number, since it uses less digits than its factorization.

67398690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6066.

The product of its (nonzero) digits is 489888, while the sum is 48.

The square root of 67398690 is about 8209.6705171401. The cubic root of 67398690 is about 406.9588385308.

The spelling of 67398690 in words is "sixty-seven million, three hundred ninety-eight thousand, six hundred ninety".