20963137 has 8 divisors (see below), whose sum is σ = 23764160. Its totient is φ = 18331920.

The previous prime is 20963101. The next prime is 20963147. The reversal of 20963137 is 73136902.

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

It is a cyclic number.

It is not a de Polignac number, because 20963137 - 2¹⁹ = 20438849 is a prime.

It is a super-2 number, since 2×20963137² = 878906225761538, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20963099 and 20963108.

It is not an unprimeable number, because it can be changed into a prime (20963147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42189 + ... + 42682.

It is an arithmetic number, because the mean of its divisors is an integer number (2970520).

Almost surely, 2^20963137 is an apocalyptic number.

It is an amenable number.

20963137 is a deficient number, since it is larger than the sum of its proper divisors (2801023).

20963137 is a wasteful number, since it uses less digits than its factorization.

20963137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84903.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 20963137 is about 4578.5518452891. The cubic root of 20963137 is about 275.7308909893.

The spelling of 20963137 in words is "twenty million, nine hundred sixty-three thousand, one hundred thirty-seven".