49645690 has 8 divisors (see below), whose sum is σ = 89362260. Its totient is φ = 19858272.

The previous prime is 49645679. The next prime is 49645699. The reversal of 49645690 is 9654694.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 46826649 + 2819041 = 6843^2 + 1679^2 .

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

It is a super-2 number, since 2×49645690² = 4929389071152200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (49645699) 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, 2482275 + ... + 2482294.

Almost surely, 2^49645690 is an apocalyptic number.

49645690 is a deficient number, since it is larger than the sum of its proper divisors (39716570).

49645690 is a wasteful number, since it uses less digits than its factorization.

49645690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4964576.

The product of its (nonzero) digits is 233280, while the sum is 43.

The square root of 49645690 is about 7045.9697700175. The cubic root of 49645690 is about 367.5308934802.

The spelling of 49645690 in words is "forty-nine million, six hundred forty-five thousand, six hundred ninety".