620460861 has 8 divisors (see below), whose sum is σ = 829942464. Its totient is φ = 412309920.

The previous prime is 620460859. The next prime is 620460871. The reversal of 620460861 is 168064026.

It is a happy number.

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

It is not a de Polignac number, because 620460861 - 2¹ = 620460859 is a prime.

It is a super-2 number, since 2×620460861² = 769943360065722642, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620460851) 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, 331576 + ... + 333441.

It is an arithmetic number, because the mean of its divisors is an integer number (103742808).

Almost surely, 2^620460861 is an apocalyptic number.

It is an amenable number.

620460861 is a deficient number, since it is larger than the sum of its proper divisors (209481603).

620460861 is a wasteful number, since it uses less digits than its factorization.

620460861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665331.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 620460861 is about 24909.0517884563. The cubic root of 620460861 is about 852.9131239841.

The spelling of 620460861 in words is "six hundred twenty million, four hundred sixty thousand, eight hundred sixty-one".