53690386 has 16 divisors (see below), whose sum is σ = 85437720. Its totient is φ = 25217280.

The previous prime is 53690381. The next prime is 53690387. The reversal of 53690386 is 68309635.

It can be written as a sum of positive squares in 4 ways, for example, as 50851161 + 2839225 = 7131^2 + 1685^2 .

It is not an unprimeable number, because it can be changed into a prime (53690381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21280 + ... + 23668.

Almost surely, 2^53690386 is an apocalyptic number.

53690386 is a deficient number, since it is larger than the sum of its proper divisors (31747334).

53690386 is a wasteful number, since it uses less digits than its factorization.

53690386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3069.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 53690386 is about 7327.3723803284. The cubic root of 53690386 is about 377.2525425289.

The spelling of 53690386 in words is "fifty-three million, six hundred ninety thousand, three hundred eighty-six".