61564322 has 4 divisors (see below), whose sum is σ = 92346486. Its totient is φ = 30782160.

The previous prime is 61564319. The next prime is 61564333. The reversal of 61564322 is 22346516.

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., 33166081 + 28398241 = 5759^2 + 5329^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15391079 + ... + 15391082.

Almost surely, 2^61564322 is an apocalyptic number.

61564322 is a deficient number, since it is larger than the sum of its proper divisors (30782164).

61564322 is a wasteful number, since it uses less digits than its factorization.

61564322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30782163.

The product of its digits is 8640, while the sum is 29.

The square root of 61564322 is about 7846.2935198729. The cubic root of 61564322 is about 394.8599022471.

The spelling of 61564322 in words is "sixty-one million, five hundred sixty-four thousand, three hundred twenty-two".