21061702 has 8 divisors (see below), whose sum is σ = 32128200. Its totient is φ = 10352304.

The previous prime is 21061693. The next prime is 21061717. The reversal of 21061702 is 20716012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21061702² = 887190582273608, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21061702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89127 + ... + 89362.

It is an arithmetic number, because the mean of its divisors is an integer number (4016025).

Almost surely, 2^21061702 is an apocalyptic number.

21061702 is a deficient number, since it is larger than the sum of its proper divisors (11066498).

21061702 is a wasteful number, since it uses less digits than its factorization.

21061702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178550.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 21061702 is about 4589.3029971881. The cubic root of 21061702 is about 276.1623615862.

Adding to 21061702 its reverse (20716012), we get a palindrome (41777714).

The spelling of 21061702 in words is "twenty-one million, sixty-one thousand, seven hundred two".