616551001 has 8 divisors (see below), whose sum is σ = 676360800. Its totient is φ = 557367840.

The previous prime is 616550993. The next prime is 616551031. The reversal of 616551001 is 100155616.

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 616551001 - 2³ = 616550993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616551031) 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, 154596 + ... + 158533.

It is an arithmetic number, because the mean of its divisors is an integer number (84545100).

Almost surely, 2^616551001 is an apocalyptic number.

It is an amenable number.

616551001 is a deficient number, since it is larger than the sum of its proper divisors (59809799).

616551001 is a wasteful number, since it uses less digits than its factorization.

616551001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313319.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 616551001 is about 24830.4450423266. The cubic root of 616551001 is about 851.1177916885.

The spelling of 616551001 in words is "six hundred sixteen million, five hundred fifty-one thousand, one".