49720666 has 8 divisors (see below), whose sum is σ = 74622420. Its totient is φ = 24846528.

The previous prime is 49720639. The next prime is 49720681. The reversal of 49720666 is 66602794.

It can be written as a sum of positive squares in 2 ways, for example, as 49491225 + 229441 = 7035^2 + 479^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1581 + ... + 10096.

Almost surely, 2^49720666 is an apocalyptic number.

49720666 is a deficient number, since it is larger than the sum of its proper divisors (24901754).

49720666 is a wasteful number, since it uses less digits than its factorization.

49720666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13808.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 49720666 is about 7051.2882510928. The cubic root of 49720666 is about 367.7158181333.

The spelling of 49720666 in words is "forty-nine million, seven hundred twenty thousand, six hundred sixty-six".