736523649 has 6 divisors (see below), whose sum is σ = 1063867506. Its totient is φ = 491015760.

The previous prime is 736523639. The next prime is 736523659. The reversal of 736523649 is 946325637.

It is an interprime number because it is at equal distance from previous prime (736523639) and next prime (736523659).

It can be written as a sum of positive squares in only one way, i.e., 736145424 + 378225 = 27132^2 + 615^2 .

It is not a de Polignac number, because 736523649 - 2⁵ = 736523617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (736523629) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40917972 + ... + 40917989.

It is an arithmetic number, because the mean of its divisors is an integer number (177311251).

Almost surely, 2^736523649 is an apocalyptic number.

It is an amenable number.

736523649 is a deficient number, since it is larger than the sum of its proper divisors (327343857).

736523649 is a wasteful number, since it uses less digits than its factorization.

736523649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81835967 (or 81835964 counting only the distinct ones).

The product of its digits is 816480, while the sum is 45.

The square root of 736523649 is about 27138.9691956051. The cubic root of 736523649 is about 903.0855612204.

The spelling of 736523649 in words is "seven hundred thirty-six million, five hundred twenty-three thousand, six hundred forty-nine".