61583723 has 4 divisors (see below), whose sum is σ = 61604688. Its totient is φ = 61562760.

The previous prime is 61583671. The next prime is 61583729. The reversal of 61583723 is 32738516.

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 61583723 - 2⁶ = 61583659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61583729) 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, 5183 + ... + 12248.

It is an arithmetic number, because the mean of its divisors is an integer number (15401172).

Almost surely, 2^61583723 is an apocalyptic number.

61583723 is a deficient number, since it is larger than the sum of its proper divisors (20965).

61583723 is a wasteful number, since it uses less digits than its factorization.

61583723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20964.

The product of its digits is 30240, while the sum is 35.

The square root of 61583723 is about 7847.5297387140. The cubic root of 61583723 is about 394.9013757940.

The spelling of 61583723 in words is "sixty-one million, five hundred eighty-three thousand, seven hundred twenty-three".