620481534 has 16 divisors (see below), whose sum is σ = 1294918272. Its totient is φ = 197834648.

The previous prime is 620481509. The next prime is 620481541. The reversal of 620481534 is 435184026.

It is a junction number, because it is equal to n+sod(n) for n = 620481495 and 620481504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2247984 + ... + 2248259.

It is an arithmetic number, because the mean of its divisors is an integer number (80932392).

Almost surely, 2^620481534 is an apocalyptic number.

620481534 is an abundant number, since it is smaller than the sum of its proper divisors (674436738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

620481534 is a wasteful number, since it uses less digits than its factorization.

620481534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4496271.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 620481534 is about 24909.4667546297. The cubic root of 620481534 is about 852.9225965543.

The spelling of 620481534 in words is "six hundred twenty million, four hundred eighty-one thousand, five hundred thirty-four".