616397397 has 32 divisors (see below), whose sum is σ = 1057726464. Its totient is φ = 309873600.

The previous prime is 616397371. The next prime is 616397413. The reversal of 616397397 is 793793616.

It is not a de Polignac number, because 616397397 - 2⁷ = 616397269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616397347) 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 31 ways as a sum of consecutive naturals, for example, 35878 + ... + 50199.

It is an arithmetic number, because the mean of its divisors is an integer number (33053952).

Almost surely, 2^616397397 is an apocalyptic number.

It is an amenable number.

616397397 is a deficient number, since it is larger than the sum of its proper divisors (441329067).

616397397 is a wasteful number, since it uses less digits than its factorization.

616397397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86129.

The product of its digits is 1285956, while the sum is 51.

The square root of 616397397 is about 24827.3517919250. The cubic root of 616397397 is about 851.0471049405.

The spelling of 616397397 in words is "six hundred sixteen million, three hundred ninety-seven thousand, three hundred ninety-seven".