20674307 has 2 divisors, whose sum is σ = 20674308. Its totient is φ = 20674306.

The previous prime is 20674273. The next prime is 20674327. The reversal of 20674307 is 70347602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20674307 - 2⁶ = 20674243 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20674307.

It is not a weakly prime, because it can be changed into another prime (20674327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10337153 + 10337154.

It is an arithmetic number, because the mean of its divisors is an integer number (10337154).

Almost surely, 2^20674307 is an apocalyptic number.

20674307 is a deficient number, since it is larger than the sum of its proper divisors (1).

20674307 is an equidigital number, since it uses as much as digits as its factorization.

20674307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 20674307 is about 4546.9008126415. The cubic root of 20674307 is about 274.4586905586.

The spelling of 20674307 in words is "twenty million, six hundred seventy-four thousand, three hundred seven".