253766 has 8 divisors (see below), whose sum is σ = 393024. Its totient is φ = 122760.

The previous prime is 253763. The next prime is 253769. The reversal of 253766 is 667352.

It is an interprime number because it is at equal distance from previous prime (253763) and next prime (253769).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253763) 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, 1985 + ... + 2108.

It is an arithmetic number, because the mean of its divisors is an integer number (49128).

2²⁵³⁷⁶⁶ is an apocalyptic number.

253766 is a deficient number, since it is larger than the sum of its proper divisors (139258).

253766 is a wasteful number, since it uses less digits than its factorization.

253766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4126.

The product of its digits is 7560, while the sum is 29.

The square root of 253766 is about 503.7519230733. The cubic root of 253766 is about 63.3108014647.

The spelling of 253766 in words is "two hundred fifty-three thousand, seven hundred sixty-six".