263464642 has 16 divisors (see below), whose sum is σ = 463861440. Its totient is φ = 109861488.

The previous prime is 263464633. The next prime is 263464651. The reversal of 263464642 is 246464362.

263464642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (263464633) and next prime (263464651).

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253792 + ... + 254827.

It is an arithmetic number, because the mean of its divisors is an integer number (28991340).

Almost surely, 2^263464642 is an apocalyptic number.

263464642 is a deficient number, since it is larger than the sum of its proper divisors (200396798).

263464642 is a wasteful number, since it uses less digits than its factorization.

263464642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508665.

The product of its digits is 165888, while the sum is 37.

The square root of 263464642 is about 16231.5939451429. The cubic root of 263464642 is about 641.0729414505.

It can be divided in two parts, 2634 and 64642, that added together give a palindrome (67276).

The spelling of 263464642 in words is "two hundred sixty-three million, four hundred sixty-four thousand, six hundred forty-two".