620575455 has 8 divisors (see below), whose sum is σ = 992920752. Its totient is φ = 330973568.

The previous prime is 620575399. The next prime is 620575457. The reversal of 620575455 is 554575026.

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

It is a cyclic number.

It is not a de Polignac number, because 620575455 - 2²² = 616381151 is a prime.

It is a super-2 number, since 2×620575455² = 770227790696914050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620575457) 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, 20685834 + ... + 20685863.

It is an arithmetic number, because the mean of its divisors is an integer number (124115094).

Almost surely, 2^620575455 is an apocalyptic number.

620575455 is a deficient number, since it is larger than the sum of its proper divisors (372345297).

620575455 is a wasteful number, since it uses less digits than its factorization.

620575455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41371705.

The product of its (nonzero) digits is 210000, while the sum is 39.

The square root of 620575455 is about 24911.3519303951. The cubic root of 620575455 is about 852.9656294232.

The spelling of 620575455 in words is "six hundred twenty million, five hundred seventy-five thousand, four hundred fifty-five".