920666027 has 4 divisors (see below), whose sum is σ = 921491376. Its totient is φ = 919840680.

The previous prime is 920666023. The next prime is 920666039. The reversal of 920666027 is 720666029.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 720666029 = 19 ⋅37929791.

It is a cyclic number.

It is not a de Polignac number, because 920666027 - 2² = 920666023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (920666023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410999 + ... + 413232.

It is an arithmetic number, because the mean of its divisors is an integer number (230372844).

Almost surely, 2^920666027 is an apocalyptic number.

920666027 is a deficient number, since it is larger than the sum of its proper divisors (825349).

920666027 is a wasteful number, since it uses less digits than its factorization.

920666027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825348.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 920666027 is about 30342.4789198246. The cubic root of 920666027 is about 972.8234690322.

The spelling of 920666027 in words is "nine hundred twenty million, six hundred sixty-six thousand, twenty-seven".