655151897 has 4 divisors (see below), whose sum is σ = 659865360. Its totient is φ = 650438436.

The previous prime is 655151891. The next prime is 655151909. The reversal of 655151897 is 798151556.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 655151897 - 2⁸ = 655151641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (655151891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2356523 + ... + 2356800.

It is an arithmetic number, because the mean of its divisors is an integer number (164966340).

Almost surely, 2^655151897 is an apocalyptic number.

It is an amenable number.

655151897 is a deficient number, since it is larger than the sum of its proper divisors (4713463).

655151897 is a wasteful number, since it uses less digits than its factorization.

655151897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4713462.

The product of its digits is 378000, while the sum is 47.

The square root of 655151897 is about 25595.9351655688. The cubic root of 655151897 is about 868.5216877254.

The spelling of 655151897 in words is "six hundred fifty-five million, one hundred fifty-one thousand, eight hundred ninety-seven".