253617667 has 4 divisors (see below), whose sum is σ = 258402960. Its totient is φ = 248832376.

The previous prime is 253617649. The next prime is 253617671. The reversal of 253617667 is 766716352.

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

It is a cyclic number.

It is not a de Polignac number, because 253617667 - 2¹⁵ = 253584899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253617607) 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, 2392567 + ... + 2392672.

It is an arithmetic number, because the mean of its divisors is an integer number (64600740).

Almost surely, 2^253617667 is an apocalyptic number.

253617667 is a deficient number, since it is larger than the sum of its proper divisors (4785293).

253617667 is an equidigital number, since it uses as much as digits as its factorization.

253617667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4785292.

The product of its digits is 317520, while the sum is 43.

The square root of 253617667 is about 15925.3780802843. The cubic root of 253617667 is about 632.9846344269.

The spelling of 253617667 in words is "two hundred fifty-three million, six hundred seventeen thousand, six hundred sixty-seven".