610616551 has 8 divisors (see below), whose sum is σ = 623258064. Its totient is φ = 598016640.

The previous prime is 610616549. The next prime is 610616561. The reversal of 610616551 is 155616016.

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 610616551 - 2¹ = 610616549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (610616521) 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, 20175 + ... + 40351.

It is an arithmetic number, because the mean of its divisors is an integer number (77907258).

Almost surely, 2^610616551 is an apocalyptic number.

610616551 is a deficient number, since it is larger than the sum of its proper divisors (12641513).

610616551 is a wasteful number, since it uses less digits than its factorization.

610616551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20801.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 610616551 is about 24710.6566282647. The cubic root of 610616551 is about 848.3782461579.

The spelling of 610616551 in words is "six hundred ten million, six hundred sixteen thousand, five hundred fifty-one".