655414457 has 4 divisors (see below), whose sum is σ = 655469136. Its totient is φ = 655359780.

The previous prime is 655414427. The next prime is 655414477. The reversal of 655414457 is 754414556.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 655414457 - 2¹² = 655410361 is a prime.

It is a super-2 number, since 2×655414457² = 859136220889209698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (655414427) 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, 719 + ... + 36212.

It is an arithmetic number, because the mean of its divisors is an integer number (163867284).

Almost surely, 2^655414457 is an apocalyptic number.

It is an amenable number.

655414457 is a deficient number, since it is larger than the sum of its proper divisors (54679).

655414457 is a wasteful number, since it uses less digits than its factorization.

655414457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54678.

The product of its digits is 336000, while the sum is 41.

The square root of 655414457 is about 25601.0635911870. The cubic root of 655414457 is about 868.6376957326.

Subtracting 655414457 from its reverse (754414556), we obtain a palindrome (99000099).

The spelling of 655414457 in words is "six hundred fifty-five million, four hundred fourteen thousand, four hundred fifty-seven".