620553087 has 48 divisors (see below), whose sum is σ = 1166151168. Its totient is φ = 308341440.

The previous prime is 620553077. The next prime is 620553113. The reversal of 620553087 is 780355026.

620553087 is a `hidden beast` number, since 6 + 20 + 553 + 0 + 87 = 666.

It is not a de Polignac number, because 620553087 - 2⁸ = 620552831 is a prime.

It is a super-2 number, since 2×620553087² = 770172267570459138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620553047) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3528 + ... + 35405.

It is an arithmetic number, because the mean of its divisors is an integer number (24294816).

Almost surely, 2^620553087 is an apocalyptic number.

620553087 is a deficient number, since it is larger than the sum of its proper divisors (545598081).

620553087 is a wasteful number, since it uses less digits than its factorization.

620553087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38980 (or 38977 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 620553087 is about 24910.9029744006. The cubic root of 620553087 is about 852.9553812123.

The spelling of 620553087 in words is "six hundred twenty million, five hundred fifty-three thousand, eighty-seven".