61444723 has 2 divisors, whose sum is σ = 61444724. Its totient is φ = 61444722.

The previous prime is 61444709. The next prime is 61444741. The reversal of 61444723 is 32744416.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61444723 - 2⁹ = 61444211 is a prime.

It is not a weakly prime, because it can be changed into another prime (61444703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30722361 + 30722362.

It is an arithmetic number, because the mean of its divisors is an integer number (30722362).

Almost surely, 2^61444723 is an apocalyptic number.

61444723 is a deficient number, since it is larger than the sum of its proper divisors (1).

61444723 is an equidigital number, since it uses as much as digits as its factorization.

61444723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 31.

The square root of 61444723 is about 7838.6684455971. The cubic root of 61444723 is about 394.6040426751.

The spelling of 61444723 in words is "sixty-one million, four hundred forty-four thousand, seven hundred twenty-three".