746606681 has 2 divisors, whose sum is σ = 746606682. Its totient is φ = 746606680.

The previous prime is 746606647. The next prime is 746606713. The reversal of 746606681 is 186606647.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 682045456 + 64561225 = 26116^2 + 8035^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-746606681 is a prime.

It is a super-2 number, since 2×746606681² = 1114843072227671522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (746606621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 373303340 + 373303341.

It is an arithmetic number, because the mean of its divisors is an integer number (373303341).

Almost surely, 2^746606681 is an apocalyptic number.

It is an amenable number.

746606681 is a deficient number, since it is larger than the sum of its proper divisors (1).

746606681 is an equidigital number, since it uses as much as digits as its factorization.

746606681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 746606681 is about 27324.1043952039. The cubic root of 746606681 is about 907.1879869526.

The spelling of 746606681 in words is "seven hundred forty-six million, six hundred six thousand, six hundred eighty-one".