53680638 has 16 divisors (see below), whose sum is σ = 117121536. Its totient is φ = 16266840.

The previous prime is 53680633. The next prime is 53680639. The reversal of 53680638 is 83608635.

It is a super-2 number, since 2×53680638² = 5763221792174088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53680596 and 53680605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53680631) 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, 406606 + ... + 406737.

It is an arithmetic number, because the mean of its divisors is an integer number (7320096).

Almost surely, 2^53680638 is an apocalyptic number.

53680638 is an abundant number, since it is smaller than the sum of its proper divisors (63440898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53680638 is a wasteful number, since it uses less digits than its factorization.

53680638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813359.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 53680638 is about 7326.7071730758. The cubic root of 53680638 is about 377.2297098852.

The spelling of 53680638 in words is "fifty-three million, six hundred eighty thousand, six hundred thirty-eight".