61564795 has 4 divisors (see below), whose sum is σ = 73877760. Its totient is φ = 49251832.

The previous prime is 61564793. The next prime is 61564801. The reversal of 61564795 is 59746516.

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

It is a cyclic number.

It is not a de Polignac number, because 61564795 - 2¹ = 61564793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61564793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6156475 + ... + 6156484.

It is an arithmetic number, because the mean of its divisors is an integer number (18469440).

Almost surely, 2^61564795 is an apocalyptic number.

61564795 is a deficient number, since it is larger than the sum of its proper divisors (12312965).

61564795 is a wasteful number, since it uses less digits than its factorization.

61564795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12312964.

The product of its digits is 226800, while the sum is 43.

The square root of 61564795 is about 7846.3236614353. The cubic root of 61564795 is about 394.8609134835.

The spelling of 61564795 in words is "sixty-one million, five hundred sixty-four thousand, seven hundred ninety-five".