736632409 has 2 divisors, whose sum is σ = 736632410. Its totient is φ = 736632408.

The previous prime is 736632397. The next prime is 736632469. The reversal of 736632409 is 904236637.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 392158809 + 344473600 = 19803^2 + 18560^2 .

It is a cyclic number.

It is not a de Polignac number, because 736632409 - 2⁹ = 736631897 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (736632469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 368316204 + 368316205.

It is an arithmetic number, because the mean of its divisors is an integer number (368316205).

Almost surely, 2^736632409 is an apocalyptic number.

It is an amenable number.

736632409 is a deficient number, since it is larger than the sum of its proper divisors (1).

736632409 is an equidigital number, since it uses as much as digits as its factorization.

736632409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 40.

The square root of 736632409 is about 27140.9728823416. The cubic root of 736632409 is about 903.1300109140.

The spelling of 736632409 in words is "seven hundred thirty-six million, six hundred thirty-two thousand, four hundred nine".