49690665 has 20 divisors (see below), whose sum is σ = 89075844. Its totient is φ = 26501472.

The previous prime is 49690639. The next prime is 49690679. The reversal of 49690665 is 56609694.

49690665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 6170256 + 43520409 = 2484^2 + 6597^2 .

It is not a de Polignac number, because 49690665 - 2⁵ = 49690633 is a prime.

It is a super-3 number, since 3×49690665³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 49690665.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 60942 + ... + 61751.

Almost surely, 2^49690665 is an apocalyptic number.

49690665 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

49690665 is a deficient number, since it is larger than the sum of its proper divisors (39385179).

49690665 is a wasteful number, since it uses less digits than its factorization.

49690665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122710 (or 122701 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The square root of 49690665 is about 7049.1605883254. The cubic root of 49690665 is about 367.6418444537.

The spelling of 49690665 in words is "forty-nine million, six hundred ninety thousand, six hundred sixty-five".