620991514 has 24 divisors (see below), whose sum is σ = 1100354112. Its totient is φ = 260554320.

The previous prime is 620991479. The next prime is 620991517. The reversal of 620991514 is 415199026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620991517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79794 + ... + 87229.

It is an arithmetic number, because the mean of its divisors is an integer number (45848088).

Almost surely, 2^620991514 is an apocalyptic number.

620991514 is a deficient number, since it is larger than the sum of its proper divisors (479362598).

620991514 is a wasteful number, since it uses less digits than its factorization.

620991514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167062 (or 167049 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 620991514 is about 24919.7013224477. The cubic root of 620991514 is about 853.1562077775.

The spelling of 620991514 in words is "six hundred twenty million, nine hundred ninety-one thousand, five hundred fourteen".