610601555 has 4 divisors (see below), whose sum is σ = 732721872. Its totient is φ = 488481240.

The previous prime is 610601549. The next prime is 610601557. The reversal of 610601555 is 555106016.

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

It is not a de Polignac number, because 610601555 - 2¹⁰ = 610600531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (610601557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61060151 + ... + 61060160.

It is an arithmetic number, because the mean of its divisors is an integer number (183180468).

Almost surely, 2^610601555 is an apocalyptic number.

610601555 is a deficient number, since it is larger than the sum of its proper divisors (122120317).

610601555 is a wasteful number, since it uses less digits than its factorization.

610601555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122120316.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 610601555 is about 24710.3531945620. The cubic root of 610601555 is about 848.3713010550.

The spelling of 610601555 in words is "six hundred ten million, six hundred one thousand, five hundred fifty-five".