669036562 has 4 divisors (see below), whose sum is σ = 1003554846. Its totient is φ = 334518280.

The previous prime is 669036551. The next prime is 669036617. The reversal of 669036562 is 265630966.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 553237441 + 115799121 = 23521^2 + 10761^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167259139 + ... + 167259142.

Almost surely, 2^669036562 is an apocalyptic number.

669036562 is a deficient number, since it is larger than the sum of its proper divisors (334518284).

669036562 is a wasteful number, since it uses less digits than its factorization.

669036562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334518283.

The product of its (nonzero) digits is 349920, while the sum is 43.

The square root of 669036562 is about 25865.7410873920. The cubic root of 669036562 is about 874.6143876911.

The spelling of 669036562 in words is "six hundred sixty-nine million, thirty-six thousand, five hundred sixty-two".