662742468 has 18 divisors (see below), whose sum is σ = 1675265774. Its totient is φ = 220914144.

The previous prime is 662742449. The next prime is 662742469. The reversal of 662742468 is 864247266.

It can be written as a sum of positive squares in only one way, i.e., 501401664 + 161340804 = 22392^2 + 12702^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (662742469) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9204721 + ... + 9204792.

Almost surely, 2^662742468 is an apocalyptic number.

It is an amenable number.

662742468 is an abundant number, since it is smaller than the sum of its proper divisors (1012523306).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

662742468 is a wasteful number, since it uses less digits than its factorization.

662742468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18409523 (or 18409518 counting only the distinct ones).

The product of its digits is 774144, while the sum is 45.

The square root of 662742468 is about 25743.7850363928. The cubic root of 662742468 is about 871.8630389079.

The spelling of 662742468 in words is "six hundred sixty-two million, seven hundred forty-two thousand, four hundred sixty-eight".