73900661 has 2 divisors, whose sum is σ = 73900662. Its totient is φ = 73900660.

The previous prime is 73900657. The next prime is 73900667. The reversal of 73900661 is 16600937.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62884900 + 11015761 = 7930^2 + 3319^2 .

It is an emirp because it is prime and its reverse (16600937) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73900661 - 2² = 73900657 is a prime.

It is a super-2 number, since 2×73900661² = 10922615392473842, which contains 22 as substring.

It is a Chen prime.

It is equal to p_4333793 and since 73900661 and 4333793 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73900667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36950330 + 36950331.

It is an arithmetic number, because the mean of its divisors is an integer number (36950331).

Almost surely, 2^73900661 is an apocalyptic number.

It is an amenable number.

73900661 is a deficient number, since it is larger than the sum of its proper divisors (1).

73900661 is an equidigital number, since it uses as much as digits as its factorization.

73900661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 73900661 is about 8596.5493658793. The cubic root of 73900661 is about 419.6456970445.

The spelling of 73900661 in words is "seventy-three million, nine hundred thousand, six hundred sixty-one".