67916533 has 4 divisors (see below), whose sum is σ = 68056480. Its totient is φ = 67776588.

The previous prime is 67916509. The next prime is 67916543. The reversal of 67916533 is 33561976.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67916533 - 2⁵ = 67916501 is a prime.

It is a super-2 number, since 2×67916533² = 9225310909480178, 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 (67916543) 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, 69243 + ... + 70216.

It is an arithmetic number, because the mean of its divisors is an integer number (17014120).

Almost surely, 2^67916533 is an apocalyptic number.

It is an amenable number.

67916533 is a deficient number, since it is larger than the sum of its proper divisors (139947).

67916533 is a wasteful number, since it uses less digits than its factorization.

67916533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139946.

The product of its digits is 102060, while the sum is 40.

The square root of 67916533 is about 8241.1487670106. The cubic root of 67916533 is about 407.9984400972.

The spelling of 67916533 in words is "sixty-seven million, nine hundred sixteen thousand, five hundred thirty-three".