620661199 has 16 divisors (see below), whose sum is σ = 661893120. Its totient is φ = 580949280.

The previous prime is 620661113. The next prime is 620661227. The reversal of 620661199 is 991166026.

It is a cyclic number.

It is not a de Polignac number, because 620661199 - 2⁷ = 620661071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620661499) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203802 + ... + 206824.

It is an arithmetic number, because the mean of its divisors is an integer number (41368320).

Almost surely, 2^620661199 is an apocalyptic number.

620661199 is a deficient number, since it is larger than the sum of its proper divisors (41231921).

620661199 is a wasteful number, since it uses less digits than its factorization.

620661199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3270.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 620661199 is about 24913.0728534238. The cubic root of 620661199 is about 853.0049119505.

The spelling of 620661199 in words is "six hundred twenty million, six hundred sixty-one thousand, one hundred ninety-nine".