667263901 has 4 divisors (see below), whose sum is σ = 667360512. Its totient is φ = 667167292.

The previous prime is 667263887. The next prime is 667263937. The reversal of 667263901 is 109362766.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 667263901 - 2¹⁵ = 667231133 is a prime.

It is a super-2 number, since 2×667263901² = 890482227155475602, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667263101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37075 + ... + 52048.

It is an arithmetic number, because the mean of its divisors is an integer number (166840128).

Almost surely, 2^667263901 is an apocalyptic number.

It is an amenable number.

667263901 is a deficient number, since it is larger than the sum of its proper divisors (96611).

667263901 is an equidigital number, since it uses as much as digits as its factorization.

667263901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96610.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 667263901 is about 25831.4517787909. The cubic root of 667263901 is about 873.8412529992.

The spelling of 667263901 in words is "six hundred sixty-seven million, two hundred sixty-three thousand, nine hundred one".