667461923 has 2 divisors, whose sum is σ = 667461924. Its totient is φ = 667461922.

The previous prime is 667461917. The next prime is 667461967. The reversal of 667461923 is 329164766.

It is an a-pointer prime, because the next prime (667461967) can be obtained adding 667461923 to its sum of digits (44).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 667461923 - 2²⁶ = 600353059 is a prime.

It is not a weakly prime, because it can be changed into another prime (667461023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333730961 + 333730962.

It is an arithmetic number, because the mean of its divisors is an integer number (333730962).

Almost surely, 2^667461923 is an apocalyptic number.

667461923 is a deficient number, since it is larger than the sum of its proper divisors (1).

667461923 is an equidigital number, since it uses as much as digits as its factorization.

667461923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 44.

The square root of 667461923 is about 25835.2844575011. The cubic root of 667461923 is about 873.9276869062.

The spelling of 667461923 in words is "six hundred sixty-seven million, four hundred sixty-one thousand, nine hundred twenty-three".