616275997 has 8 divisors (see below), whose sum is σ = 631542744. Its totient is φ = 601144128.

The previous prime is 616275949. The next prime is 616276019. The reversal of 616275997 is 799572616.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 300467556 + 315808441 = 17334^2 + 17771^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 616275997 - 2¹⁹ = 615751709 is a prime.

It is a super-2 number, since 2×616275997² = 759592208956688018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616275917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24438 + ... + 42775.

It is an arithmetic number, because the mean of its divisors is an integer number (78942843).

Almost surely, 2^616275997 is an apocalyptic number.

It is an amenable number.

616275997 is a deficient number, since it is larger than the sum of its proper divisors (15266747).

616275997 is a wasteful number, since it uses less digits than its factorization.

616275997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67439.

The product of its digits is 1428840, while the sum is 52.

The square root of 616275997 is about 24824.9067873376. The cubic root of 616275997 is about 850.9912297846.

The spelling of 616275997 in words is "six hundred sixteen million, two hundred seventy-five thousand, nine hundred ninety-seven".