20623967 has 8 divisors (see below), whose sum is σ = 25383456. Its totient is φ = 16317792.

The previous prime is 20623957. The next prime is 20623973. The reversal of 20623967 is 76932602.

It is a happy number.

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 20623967 - 2⁴ = 20623951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20623927) 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, 113228 + ... + 113409.

It is an arithmetic number, because the mean of its divisors is an integer number (3172932).

Almost surely, 2^20623967 is an apocalyptic number.

20623967 is a deficient number, since it is larger than the sum of its proper divisors (4759489).

20623967 is a wasteful number, since it uses less digits than its factorization.

20623967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226657.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 20623967 is about 4541.3618001652. The cubic root of 20623967 is about 274.2357491168.

The spelling of 20623967 in words is "twenty million, six hundred twenty-three thousand, nine hundred sixty-seven".