746606621 has 2 divisors, whose sum is σ = 746606622. Its totient is φ = 746606620.

The previous prime is 746606599. The next prime is 746606647. The reversal of 746606621 is 126606647.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 742562500 + 4044121 = 27250^2 + 2011^2 .

It is a cyclic number.

It is not a de Polignac number, because 746606621 - 2¹⁰ = 746605597 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 (746606681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 373303310 + 373303311.

It is an arithmetic number, because the mean of its divisors is an integer number (373303311).

Almost surely, 2^746606621 is an apocalyptic number.

It is an amenable number.

746606621 is a deficient number, since it is larger than the sum of its proper divisors (1).

746606621 is an equidigital number, since it uses as much as digits as its factorization.

746606621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 746606621 is about 27324.1032972722. The cubic root of 746606621 is about 907.1879626510.

The spelling of 746606621 in words is "seven hundred forty-six million, six hundred six thousand, six hundred twenty-one".