67934621 has 4 divisors (see below), whose sum is σ = 68569632. Its totient is φ = 67299612.

The previous prime is 67934593. The next prime is 67934623. The reversal of 67934621 is 12643976.

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 a de Polignac number, because none of the positive numbers 2^k-67934621 is a prime.

It is a super-2 number, since 2×67934621² = 9230225460827282, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67934623) 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, 317345 + ... + 317558.

It is an arithmetic number, because the mean of its divisors is an integer number (17142408).

Almost surely, 2^67934621 is an apocalyptic number.

It is an amenable number.

67934621 is a deficient number, since it is larger than the sum of its proper divisors (635011).

67934621 is a wasteful number, since it uses less digits than its factorization.

67934621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635010.

The product of its digits is 54432, while the sum is 38.

The square root of 67934621 is about 8242.2461137726. The cubic root of 67934621 is about 408.0346572027.

The spelling of 67934621 in words is "sixty-seven million, nine hundred thirty-four thousand, six hundred twenty-one".