20693694 has 16 divisors (see below), whose sum is σ = 47299968. Its totient is φ = 5912472.

The previous prime is 20693681. The next prime is 20693723. The reversal of 20693694 is 49639602.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246312 + ... + 246395.

It is an arithmetic number, because the mean of its divisors is an integer number (2956248).

Almost surely, 2^20693694 is an apocalyptic number.

20693694 is an abundant number, since it is smaller than the sum of its proper divisors (26606274).

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

20693694 is a wasteful number, since it uses less digits than its factorization.

20693694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492719.

The product of its (nonzero) digits is 69984, while the sum is 39.

The square root of 20693694 is about 4549.0322047662. The cubic root of 20693694 is about 274.5444535025.

The spelling of 20693694 in words is "twenty million, six hundred ninety-three thousand, six hundred ninety-four".