64444741 has 4 divisors (see below), whose sum is σ = 64472992. Its totient is φ = 64416492.

The previous prime is 64444727. The next prime is 64444759. The reversal of 64444741 is 14744446.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64444741 - 2¹⁵ = 64411973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64444697 and 64444706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64444141) 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, 10371 + ... + 15376.

It is an arithmetic number, because the mean of its divisors is an integer number (16118248).

Almost surely, 2^64444741 is an apocalyptic number.

It is an amenable number.

64444741 is a deficient number, since it is larger than the sum of its proper divisors (28251).

64444741 is a wasteful number, since it uses less digits than its factorization.

64444741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28250.

The product of its digits is 43008, while the sum is 34.

The square root of 64444741 is about 8027.7481898724. The cubic root of 64444741 is about 400.9244057892.

The spelling of 64444741 in words is "sixty-four million, four hundred forty-four thousand, seven hundred forty-one".