468620639 has 4 divisors (see below), whose sum is σ = 469153440. Its totient is φ = 468087840.

The previous prime is 468620627. The next prime is 468620671. The reversal of 468620639 is 936026864.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-468620639 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 468620639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (468620839) 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, 265079 + ... + 266840.

It is an arithmetic number, because the mean of its divisors is an integer number (117288360).

Almost surely, 2^468620639 is an apocalyptic number.

468620639 is a deficient number, since it is larger than the sum of its proper divisors (532801).

468620639 is an equidigital number, since it uses as much as digits as its factorization.

468620639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532800.

The product of its (nonzero) digits is 373248, while the sum is 44.

The square root of 468620639 is about 21647.6474241429. The cubic root of 468620639 is about 776.7366612999.

The spelling of 468620639 in words is "four hundred sixty-eight million, six hundred twenty thousand, six hundred thirty-nine".