620000551 has 4 divisors (see below), whose sum is σ = 620053672. Its totient is φ = 619947432.

The previous prime is 620000509. The next prime is 620000573. The reversal of 620000551 is 155000026.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 620000551 - 2²¹ = 617903399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620003551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 585 + ... + 35218.

It is an arithmetic number, because the mean of its divisors is an integer number (155013418).

Almost surely, 2^620000551 is an apocalyptic number.

620000551 is a deficient number, since it is larger than the sum of its proper divisors (53121).

620000551 is a wasteful number, since it uses less digits than its factorization.

620000551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53120.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 620000551 is about 24899.8102603213. The cubic root of 620000551 is about 852.7021509296.

Adding to 620000551 its reverse (155000026), we get a palindrome (775000577).

The spelling of 620000551 in words is "six hundred twenty million, five hundred fifty-one", and thus it is an aban number.