655040739 has 16 divisors (see below), whose sum is σ = 892869120. Its totient is φ = 426972000.

The previous prime is 655040699. The next prime is 655040747. The reversal of 655040739 is 937040556.

It is not a de Polignac number, because 655040739 - 2⁷ = 655040611 is a prime.

It is a super-2 number, since 2×655040739² = 858156739499332242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 655040697 and 655040706.

It is not an unprimeable number, because it can be changed into a prime (655040339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199864 + ... + 203114.

It is an arithmetic number, because the mean of its divisors is an integer number (55804320).

Almost surely, 2^655040739 is an apocalyptic number.

655040739 is a deficient number, since it is larger than the sum of its proper divisors (237828381).

655040739 is a wasteful number, since it uses less digits than its factorization.

655040739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4730.

The product of its (nonzero) digits is 113400, while the sum is 39.

The square root of 655040739 is about 25593.7636739890. The cubic root of 655040739 is about 868.4725649724.

The spelling of 655040739 in words is "six hundred fifty-five million, forty thousand, seven hundred thirty-nine".