620521346 has 4 divisors (see below), whose sum is σ = 930782022. Its totient is φ = 310260672.

The previous prime is 620521333. The next prime is 620521357. The reversal of 620521346 is 643125026.

620521346 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 497067025 + 123454321 = 22295^2 + 11111^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155130335 + ... + 155130338.

Almost surely, 2^620521346 is an apocalyptic number.

620521346 is a deficient number, since it is larger than the sum of its proper divisors (310260676).

620521346 is a wasteful number, since it uses less digits than its factorization.

620521346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310260675.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 620521346 is about 24910.2658757389. The cubic root of 620521346 is about 852.9408382082.

The spelling of 620521346 in words is "six hundred twenty million, five hundred twenty-one thousand, three hundred forty-six".