662642642 has 16 divisors (see below), whose sum is σ = 1018200480. Its totient is φ = 323259552.

The previous prime is 662642641. The next prime is 662642653. The reversal of 662642642 is 246246266.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 662642596 and 662642605.

It is not an unprimeable number, because it can be changed into a prime (662642641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85109 + ... + 92567.

It is an arithmetic number, because the mean of its divisors is an integer number (63637530).

Almost surely, 2^662642642 is an apocalyptic number.

662642642 is a deficient number, since it is larger than the sum of its proper divisors (355557838).

662642642 is a wasteful number, since it uses less digits than its factorization.

662642642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8537.

The product of its digits is 165888, while the sum is 38.

The square root of 662642642 is about 25741.8461264922. The cubic root of 662642642 is about 871.8192617374.

The spelling of 662642642 in words is "six hundred sixty-two million, six hundred forty-two thousand, six hundred forty-two".