20361706 has 4 divisors (see below), whose sum is σ = 30542562. Its totient is φ = 10180852.

The previous prime is 20361703. The next prime is 20361709. The reversal of 20361706 is 60716302.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (20361703) and next prime (20361709).

It can be written as a sum of positive squares in only one way, i.e., 20331081 + 30625 = 4509^2 + 175^2 .

It is not an unprimeable number, because it can be changed into a prime (20361703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5090425 + ... + 5090428.

Almost surely, 2^20361706 is an apocalyptic number.

20361706 is a deficient number, since it is larger than the sum of its proper divisors (10180856).

20361706 is a wasteful number, since it uses less digits than its factorization.

20361706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10180855.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 20361706 is about 4512.3947079129. The cubic root of 20361706 is about 273.0683634202.

The spelling of 20361706 in words is "twenty million, three hundred sixty-one thousand, seven hundred six".