655073638 has 8 divisors (see below), whose sum is σ = 983274840. Its totient is φ = 327315360.

The previous prime is 655073593. The next prime is 655073647. The reversal of 655073638 is 836370556.

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

It is a junction number, because it is equal to n+sod(n) for n = 655073594 and 655073603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107008 + ... + 112963.

It is an arithmetic number, because the mean of its divisors is an integer number (122909355).

Almost surely, 2^655073638 is an apocalyptic number.

655073638 is a deficient number, since it is larger than the sum of its proper divisors (328201202).

655073638 is a wasteful number, since it uses less digits than its factorization.

655073638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221462.

The product of its (nonzero) digits is 453600, while the sum is 43.

The square root of 655073638 is about 25594.4063810826. The cubic root of 655073638 is about 868.4871042211.

The spelling of 655073638 in words is "six hundred fifty-five million, seventy-three thousand, six hundred thirty-eight".