73807973 has 2 divisors, whose sum is σ = 73807974. Its totient is φ = 73807972.

The previous prime is 73807963. The next prime is 73808003. The reversal of 73807973 is 37970837.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38962564 + 34845409 = 6242^2 + 5903^2 .

It is a cyclic number.

It is not a de Polignac number, because 73807973 - 2⁸ = 73807717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73807963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36903986 + 36903987.

It is an arithmetic number, because the mean of its divisors is an integer number (36903987).

Almost surely, 2^73807973 is an apocalyptic number.

It is an amenable number.

73807973 is a deficient number, since it is larger than the sum of its proper divisors (1).

73807973 is an equidigital number, since it uses as much as digits as its factorization.

73807973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 222264, while the sum is 44.

The square root of 73807973 is about 8591.1566741621. The cubic root of 73807973 is about 419.4701803772.

The spelling of 73807973 in words is "seventy-three million, eight hundred seven thousand, nine hundred seventy-three".