20701715 has 8 divisors (see below), whose sum is σ = 24923808. Its totient is φ = 16506880.

The previous prime is 20701711. The next prime is 20701717. The reversal of 20701715 is 51710702.

It is a happy number.

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

It is not a de Polignac number, because 20701715 - 2² = 20701711 is a prime.

It is a super-2 number, since 2×20701715² = 857122007882450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20701711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5102 + ... + 8211.

It is an arithmetic number, because the mean of its divisors is an integer number (3115476).

Almost surely, 2^20701715 is an apocalyptic number.

20701715 is a deficient number, since it is larger than the sum of its proper divisors (4222093).

20701715 is a wasteful number, since it uses less digits than its factorization.

20701715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13629.

The product of its (nonzero) digits is 490, while the sum is 23.

The square root of 20701715 is about 4549.9137354460. The cubic root of 20701715 is about 274.5799206132.

The spelling of 20701715 in words is "twenty million, seven hundred one thousand, seven hundred fifteen".