616452971 has 4 divisors (see below), whose sum is σ = 637710000. Its totient is φ = 595195944.

The previous prime is 616452961. The next prime is 616452973. The reversal of 616452971 is 179254616.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 616452971 - 2¹⁰ = 616451947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (616452973) 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 3 ways as a sum of consecutive naturals, for example, 10628471 + ... + 10628528.

It is an arithmetic number, because the mean of its divisors is an integer number (159427500).

Almost surely, 2^616452971 is an apocalyptic number.

616452971 is a deficient number, since it is larger than the sum of its proper divisors (21257029).

616452971 is a wasteful number, since it uses less digits than its factorization.

616452971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21257028.

The product of its digits is 90720, while the sum is 41.

The square root of 616452971 is about 24828.4709758777. The cubic root of 616452971 is about 851.0726807951.

The spelling of 616452971 in words is "six hundred sixteen million, four hundred fifty-two thousand, nine hundred seventy-one".