655323397 has 16 divisors (see below), whose sum is σ = 694628352. Its totient is φ = 617505840.

The previous prime is 655323379. The next prime is 655323413. The reversal of 655323397 is 793323556.

It is a cyclic number.

It is not a de Polignac number, because 655323397 - 2²³ = 646934789 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655323997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141208 + ... + 145774.

It is an arithmetic number, because the mean of its divisors is an integer number (43414272).

Almost surely, 2^655323397 is an apocalyptic number.

It is an amenable number.

655323397 is a deficient number, since it is larger than the sum of its proper divisors (39304955).

655323397 is a wasteful number, since it uses less digits than its factorization.

655323397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4728.

The product of its digits is 510300, while the sum is 43.

The square root of 655323397 is about 25599.2850876738. The cubic root of 655323397 is about 868.5974658133.

The spelling of 655323397 in words is "six hundred fifty-five million, three hundred twenty-three thousand, three hundred ninety-seven".