632736521 has 2 divisors, whose sum is σ = 632736522. Its totient is φ = 632736520.

The previous prime is 632736493. The next prime is 632736547. The reversal of 632736521 is 125637236.

632736521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 519612025 + 113124496 = 22795^2 + 10636^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-632736521 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (632736551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 316368260 + 316368261.

It is an arithmetic number, because the mean of its divisors is an integer number (316368261).

Almost surely, 2^632736521 is an apocalyptic number.

It is an amenable number.

632736521 is a deficient number, since it is larger than the sum of its proper divisors (1).

632736521 is an equidigital number, since it uses as much as digits as its factorization.

632736521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 35.

The square root of 632736521 is about 25154.2545307946. The cubic root of 632736521 is about 858.5013203448.

The spelling of 632736521 in words is "six hundred thirty-two million, seven hundred thirty-six thousand, five hundred twenty-one".