49720643 has 12 divisors (see below), whose sum is σ = 58029192. Its totient is φ = 42477120.

The previous prime is 49720639. The next prime is 49720681. The reversal of 49720643 is 34602794.

It is not a de Polignac number, because 49720643 - 2² = 49720639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49720603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15008 + ... + 18018.

It is an arithmetic number, because the mean of its divisors is an integer number (4835766).

Almost surely, 2^49720643 is an apocalyptic number.

49720643 is a deficient number, since it is larger than the sum of its proper divisors (8308549).

49720643 is a wasteful number, since it uses less digits than its factorization.

49720643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3362 (or 3355 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 49720643 is about 7051.2866201850. The cubic root of 49720643 is about 367.7157614334.

The spelling of 49720643 in words is "forty-nine million, seven hundred twenty thousand, six hundred forty-three".