746447521 has 2 divisors, whose sum is σ = 746447522. Its totient is φ = 746447520.

The previous prime is 746447503. The next prime is 746447531. The reversal of 746447521 is 125744647.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 423742225 + 322705296 = 20585^2 + 17964^2 .

It is a cyclic number.

It is not a de Polignac number, because 746447521 - 2¹³ = 746439329 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (746447531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 373223760 + 373223761.

It is an arithmetic number, because the mean of its divisors is an integer number (373223761).

Almost surely, 2^746447521 is an apocalyptic number.

It is an amenable number.

746447521 is a deficient number, since it is larger than the sum of its proper divisors (1).

746447521 is an equidigital number, since it uses as much as digits as its factorization.

746447521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 188160, while the sum is 40.

The square root of 746447521 is about 27321.1917931850. The cubic root of 746447521 is about 907.1235182459.

The spelling of 746447521 in words is "seven hundred forty-six million, four hundred forty-seven thousand, five hundred twenty-one".