44780681 has 4 divisors (see below), whose sum is σ = 48851664. Its totient is φ = 40709700.

The previous prime is 44780653. The next prime is 44780683. The reversal of 44780681 is 18608744.

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 a de Polignac number, because none of the positive numbers 2^k-44780681 is a prime.

It is a super-2 number, since 2×44780681² = 4010618781647522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44780683) 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, 2035475 + ... + 2035496.

It is an arithmetic number, because the mean of its divisors is an integer number (12212916).

Almost surely, 2^44780681 is an apocalyptic number.

It is an amenable number.

44780681 is a deficient number, since it is larger than the sum of its proper divisors (4070983).

44780681 is a wasteful number, since it uses less digits than its factorization.

44780681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4070982.

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 44780681 is about 6691.8368928120. The cubic root of 44780681 is about 355.1105415194.

The spelling of 44780681 in words is "forty-four million, seven hundred eighty thousand, six hundred eighty-one".