617155667 has 2 divisors, whose sum is σ = 617155668. Its totient is φ = 617155666.

The previous prime is 617155661. The next prime is 617155673. The reversal of 617155667 is 766551716.

It is a balanced prime because it is at equal distance from previous prime (617155661) and next prime (617155673).

It is a cyclic number.

It is not a de Polignac number, because 617155667 - 2⁶ = 617155603 is a prime.

It is a super-2 number, since 2×617155667² = 761762234620429778, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (617155661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308577833 + 308577834.

It is an arithmetic number, because the mean of its divisors is an integer number (308577834).

Almost surely, 2^617155667 is an apocalyptic number.

617155667 is a deficient number, since it is larger than the sum of its proper divisors (1).

617155667 is an equidigital number, since it uses as much as digits as its factorization.

617155667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 264600, while the sum is 44.

The square root of 617155667 is about 24842.6179578562. The cubic root of 617155667 is about 851.3959378277.

The spelling of 617155667 in words is "six hundred seventeen million, one hundred fifty-five thousand, six hundred sixty-seven".