617221066 has 32 divisors (see below), whose sum is σ = 1173864960. Its totient is φ = 236396400.

The previous prime is 617221063. The next prime is 617221069. The reversal of 617221066 is 660122716.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (617221063) and next prime (617221069).

It is not an unprimeable number, because it can be changed into a prime (617221063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24880 + ... + 43051.

It is an arithmetic number, because the mean of its divisors is an integer number (36683280).

Almost surely, 2^617221066 is an apocalyptic number.

617221066 is a deficient number, since it is larger than the sum of its proper divisors (556643894).

617221066 is a wasteful number, since it uses less digits than its factorization.

617221066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68010.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 617221066 is about 24843.9341892543. The cubic root of 617221066 is about 851.4260104546.

The spelling of 617221066 in words is "six hundred seventeen million, two hundred twenty-one thousand, sixty-six".