263494057 has 8 divisors (see below), whose sum is σ = 271906112. Its totient is φ = 255150000.

The previous prime is 263494037. The next prime is 263494069. The reversal of 263494057 is 750494362.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 263494057 - 2⁷ = 263493929 is a prime.

It is the 16233-rd Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (263494037) by changing a digit.

It is a nontrivial repunit in base 16232.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9069 + ... + 24682.

It is an arithmetic number, because the mean of its divisors is an integer number (33988264).

Almost surely, 2^263494057 is an apocalyptic number.

It is an amenable number.

263494057 is a deficient number, since it is larger than the sum of its proper divisors (8412055).

263494057 is a wasteful number, since it uses less digits than its factorization.

263494057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33999.

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 263494057 is about 16232.5000231018. The cubic root of 263494057 is about 641.0967984897.

The spelling of 263494057 in words is "two hundred sixty-three million, four hundred ninety-four thousand, fifty-seven".