642610227 has 8 divisors (see below), whose sum is σ = 979215616. Its totient is φ = 367205832.

The previous prime is 642610223. The next prime is 642610231. The reversal of 642610227 is 722016246.

642610227 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (642610223) and next prime (642610231).

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

It is not a de Polignac number, because 642610227 - 2² = 642610223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 642610194 and 642610203.

It is not an unprimeable number, because it can be changed into a prime (642610223) 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, 15300223 + ... + 15300264.

It is an arithmetic number, because the mean of its divisors is an integer number (122401952).

Almost surely, 2^642610227 is an apocalyptic number.

642610227 is a deficient number, since it is larger than the sum of its proper divisors (336605389).

642610227 is a wasteful number, since it uses less digits than its factorization.

642610227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30600497.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 642610227 is about 25349.7579278383. The cubic root of 642610227 is about 862.9438626121.

It can be divided in two parts, 6426 and 10227, that added together give a triangular number (16653 = T₁₈₂).

The spelling of 642610227 in words is "six hundred forty-two million, six hundred ten thousand, two hundred twenty-seven".