620131534 has 48 divisors (see below), whose sum is σ = 1063470096. Its totient is φ = 271175520.

The previous prime is 620131511. The next prime is 620131553. The reversal of 620131534 is 435131026.

It is a super-2 number, since 2×620131534² = 769126238922386312, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 620131499 and 620131508.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2238604 + ... + 2238880.

It is an arithmetic number, because the mean of its divisors is an integer number (22155627).

Almost surely, 2^620131534 is an apocalyptic number.

620131534 is a deficient number, since it is larger than the sum of its proper divisors (443338562).

620131534 is a wasteful number, since it uses less digits than its factorization.

620131534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370 (or 319 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 620131534 is about 24902.4403221853. The cubic root of 620131534 is about 852.7621947587.

The spelling of 620131534 in words is "six hundred twenty million, one hundred thirty-one thousand, five hundred thirty-four".