655452813 has 8 divisors (see below), whose sum is σ = 875733568. Its totient is φ = 436070304.

The previous prime is 655452803. The next prime is 655452857. The reversal of 655452813 is 318254556.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-655452813 is a prime.

It is a super-2 number, since 2×655452813² = 859236780139225938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655452803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222856 + ... + 225777.

It is an arithmetic number, because the mean of its divisors is an integer number (109466696).

Almost surely, 2^655452813 is an apocalyptic number.

It is an amenable number.

655452813 is a deficient number, since it is larger than the sum of its proper divisors (220280755).

655452813 is a wasteful number, since it uses less digits than its factorization.

655452813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449123.

The product of its digits is 144000, while the sum is 39.

The square root of 655452813 is about 25601.8126897296. The cubic root of 655452813 is about 868.6546401343.

The spelling of 655452813 in words is "six hundred fifty-five million, four hundred fifty-two thousand, eight hundred thirteen".