53690 has 32 divisors (see below), whose sum is σ = 120960. Its totient is φ = 16704.

The previous prime is 53681. The next prime is 53693. The reversal of 53690 is 9635.

53690 = T₇₇ + T₇₈ + ... + T₉₁.

It is a super-2 number, since 2×53690² = 5765232200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 881 + ... + 939.

It is an arithmetic number, because the mean of its divisors is an integer number (3780).

2⁵³⁶⁹⁰ is an apocalyptic number.

53690 is an abundant number, since it is smaller than the sum of its proper divisors (67270).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60480).

53690 is a wasteful number, since it uses less digits than its factorization.

53690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 53690 is about 231.7110269279. The cubic root of 53690 is about 37.7251638458.

It can be divided in two parts, 536 and 90, that added together give a palindrome (626).

The spelling of 53690 in words is "fifty-three thousand, six hundred ninety".