67996431 has 6 divisors (see below), whose sum is σ = 98217080. Its totient is φ = 45330948.

The previous prime is 67996429. The next prime is 67996471. The reversal of 67996431 is 13469976.

It is not a de Polignac number, because 67996431 - 2¹ = 67996429 is a prime.

It is a super-2 number, since 2×67996431² = 9247029257475522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67996471) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3777571 + ... + 3777588.

Almost surely, 2^67996431 is an apocalyptic number.

67996431 is a deficient number, since it is larger than the sum of its proper divisors (30220649).

67996431 is a wasteful number, since it uses less digits than its factorization.

67996431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7555165 (or 7555162 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 67996431 is about 8245.9948459843. The cubic root of 67996431 is about 408.1583691712.

The spelling of 67996431 in words is "sixty-seven million, nine hundred ninety-six thousand, four hundred thirty-one".