655704401 has 8 divisors (see below), whose sum is σ = 746414784. Its totient is φ = 570177520.

The previous prime is 655704397. The next prime is 655704409. The reversal of 655704401 is 104407556.

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

It is not a de Polignac number, because 655704401 - 2² = 655704397 is a prime.

It is a super-2 number, since 2×655704401² = 859896522981537602, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (655704409) 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, 1295606 + ... + 1296111.

It is an arithmetic number, because the mean of its divisors is an integer number (93301848).

Almost surely, 2^655704401 is an apocalyptic number.

It is an amenable number.

655704401 is a deficient number, since it is larger than the sum of its proper divisors (90710383).

655704401 is a wasteful number, since it uses less digits than its factorization.

655704401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2591751.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 655704401 is about 25606.7256985348. The cubic root of 655704401 is about 868.7657669378.

The spelling of 655704401 in words is "six hundred fifty-five million, seven hundred four thousand, four hundred one".