73700621 has 2 divisors, whose sum is σ = 73700622. Its totient is φ = 73700620.

The previous prime is 73700611. The next prime is 73700659. The reversal of 73700621 is 12600737.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60668521 + 13032100 = 7789^2 + 3610^2 .

It is a cyclic number.

It is not a de Polignac number, because 73700621 - 2²² = 69506317 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 (73700611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36850310 + 36850311.

It is an arithmetic number, because the mean of its divisors is an integer number (36850311).

Almost surely, 2^73700621 is an apocalyptic number.

It is an amenable number.

73700621 is a deficient number, since it is larger than the sum of its proper divisors (1).

73700621 is an equidigital number, since it uses as much as digits as its factorization.

73700621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1764, while the sum is 26.

The square root of 73700621 is about 8584.9065807381. The cubic root of 73700621 is about 419.2667117870.

The spelling of 73700621 in words is "seventy-three million, seven hundred thousand, six hundred twenty-one".