67374661 has 2 divisors, whose sum is σ = 67374662. Its totient is φ = 67374660.

The previous prime is 67374653. The next prime is 67374667. The reversal of 67374661 is 16647376.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36360900 + 31013761 = 6030^2 + 5569^2 .

It is a cyclic number.

It is not a de Polignac number, because 67374661 - 2³ = 67374653 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67374667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33687330 + 33687331.

It is an arithmetic number, because the mean of its divisors is an integer number (33687331).

Almost surely, 2^67374661 is an apocalyptic number.

It is an amenable number.

67374661 is a deficient number, since it is larger than the sum of its proper divisors (1).

67374661 is an equidigital number, since it uses as much as digits as its factorization.

67374661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 40.

The square root of 67374661 is about 8208.2069296528. The cubic root of 67374661 is about 406.9104697555.

The spelling of 67374661 in words is "sixty-seven million, three hundred seventy-four thousand, six hundred sixty-one".