266623401 has 8 divisors (see below), whose sum is σ = 387815904. Its totient is φ = 161589920.

The previous prime is 266623373. The next prime is 266623403. The reversal of 266623401 is 104326662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266623401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (266623403) 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, 4039716 + ... + 4039781.

It is an arithmetic number, because the mean of its divisors is an integer number (48476988).

Almost surely, 2^266623401 is an apocalyptic number.

It is an amenable number.

266623401 is a deficient number, since it is larger than the sum of its proper divisors (121192503).

266623401 is a wasteful number, since it uses less digits than its factorization.

266623401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8079511.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 266623401 is about 16328.6068297329. The cubic root of 266623401 is about 643.6247774027.

The spelling of 266623401 in words is "two hundred sixty-six million, six hundred twenty-three thousand, four hundred one".