735920649 has 6 divisors (see below), whose sum is σ = 1062996506. Its totient is φ = 490613760.

The previous prime is 735920621. The next prime is 735920651. The reversal of 735920649 is 946029537.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 449228025 + 286692624 = 21195^2 + 16932^2 .

It is not a de Polignac number, because 735920649 - 2⁹ = 735920137 is a prime.

It is a super-3 number, since 3×735920649³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (735920659) 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, 40884472 + ... + 40884489.

Almost surely, 2^735920649 is an apocalyptic number.

It is an amenable number.

735920649 is a deficient number, since it is larger than the sum of its proper divisors (327075857).

735920649 is a wasteful number, since it uses less digits than its factorization.

735920649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81768967 (or 81768964 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The square root of 735920649 is about 27127.8574347478. The cubic root of 735920649 is about 902.8390385757.

The spelling of 735920649 in words is "seven hundred thirty-five million, nine hundred twenty thousand, six hundred forty-nine".