73874981 has 2 divisors, whose sum is σ = 73874982. Its totient is φ = 73874980.

The previous prime is 73874971. The next prime is 73874987. The reversal of 73874981 is 18947837.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67798756 + 6076225 = 8234^2 + 2465^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73874981 is a prime.

It is a super-2 number, since 2×73874981² = 10915025635500722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73874987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36937490 + 36937491.

It is an arithmetic number, because the mean of its divisors is an integer number (36937491).

Almost surely, 2^73874981 is an apocalyptic number.

It is an amenable number.

73874981 is a deficient number, since it is larger than the sum of its proper divisors (1).

73874981 is an equidigital number, since it uses as much as digits as its factorization.

73874981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 47.

The square root of 73874981 is about 8595.0556135490. The cubic root of 73874981 is about 419.5970833611.

The spelling of 73874981 in words is "seventy-three million, eight hundred seventy-four thousand, nine hundred eighty-one".