561632074 has 4 divisors (see below), whose sum is σ = 842448114. Its totient is φ = 280816036.

The previous prime is 561632059. The next prime is 561632129. The reversal of 561632074 is 470236165.

It is a happy number.

561632074 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 558991449 + 2640625 = 23643^2 + 1625^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140408017 + ... + 140408020.

Almost surely, 2^561632074 is an apocalyptic number.

561632074 is a deficient number, since it is larger than the sum of its proper divisors (280816040).

561632074 is a wasteful number, since it uses less digits than its factorization.

561632074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280816039.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 561632074 is about 23698.7779009805. Note that the first 3 decimals coincide. The cubic root of 561632074 is about 825.0570264835.

The spelling of 561632074 in words is "five hundred sixty-one million, six hundred thirty-two thousand, seventy-four".