67616331 has 4 divisors (see below), whose sum is σ = 90155112. Its totient is φ = 45077552.

The previous prime is 67616299. The next prime is 67616359. The reversal of 67616331 is 13361676.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 67616331 - 2⁵ = 67616299 is a prime.

It is a super-2 number, since 2×67616331² = 9143936435803122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 67616292 and 67616301.

It is not an unprimeable number, because it can be changed into a prime (67616431) 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, 11269386 + ... + 11269391.

It is an arithmetic number, because the mean of its divisors is an integer number (22538778).

Almost surely, 2^67616331 is an apocalyptic number.

67616331 is a deficient number, since it is larger than the sum of its proper divisors (22538781).

67616331 is a wasteful number, since it uses less digits than its factorization.

67616331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22538780.

The product of its digits is 13608, while the sum is 33.

The square root of 67616331 is about 8222.9149940882. The cubic root of 67616331 is about 407.3964126278.

The spelling of 67616331 in words is "sixty-seven million, six hundred sixteen thousand, three hundred thirty-one".