1067666401 has 4 divisors (see below), whose sum is σ = 1071920304. Its totient is φ = 1063412500.

The previous prime is 1067666399. The next prime is 1067666423. The reversal of 1067666401 is 1046667601.

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 1067666401 - 2¹ = 1067666399 is a prime.

It is a super-2 number, since 2×1067666401² = 2279823087648585602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1067666441) 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, 2126575 + ... + 2127076.

It is an arithmetic number, because the mean of its divisors is an integer number (267980076).

Almost surely, 2^1067666401 is an apocalyptic number.

It is an amenable number.

1067666401 is a deficient number, since it is larger than the sum of its proper divisors (4253903).

1067666401 is an equidigital number, since it uses as much as digits as its factorization.

1067666401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4253902.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 1067666401 is about 32675.1648962939. The cubic root of 1067666401 is about 1022.0650209537.

It can be divided in two parts, 10676 and 66401, that added together give a palindrome (77077).

The spelling of 1067666401 in words is "one billion, sixty-seven million, six hundred sixty-six thousand, four hundred one".