620661197 has 8 divisors (see below), whose sum is σ = 677819520. Its totient is φ = 564847920.

The previous prime is 620661113. The next prime is 620661227. The reversal of 620661197 is 791166026.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 620661197 - 2⁸ = 620660941 is a prime.

It is a super-2 number, since 2×620661197² = 770440642922945618, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 620661197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620664197) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 335297 + ... + 337142.

It is an arithmetic number, because the mean of its divisors is an integer number (84727440).

Almost surely, 2^620661197 is an apocalyptic number.

It is an amenable number.

620661197 is a deficient number, since it is larger than the sum of its proper divisors (57158323).

620661197 is a wasteful number, since it uses less digits than its factorization.

620661197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672523.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 620661197 is about 24913.0728132842. The cubic root of 620661197 is about 853.0049110343.

The spelling of 620661197 in words is "six hundred twenty million, six hundred sixty-one thousand, one hundred ninety-seven".