6634265401 has 9 divisors (see below), whose sum is σ = 6782336911. Its totient is φ = 6489364072.

The previous prime is 6634265381. The next prime is 6634265423. The reversal of 6634265401 is 1045624366.

The square root of 6634265401 is 81451.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2946861225 + 3687404176 = 54285^2 + 60724^2 .

It is not a de Polignac number, because 6634265401 - 2⁷ = 6634265273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6634265441) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3827331 + ... + 3829063.

Almost surely, 2^6634265401 is an apocalyptic number.

6634265401 is the 81451-st square number.

6634265401 is the 40726-th centered octagonal number.

It is an amenable number.

6634265401 is a deficient number, since it is larger than the sum of its proper divisors (148071510).

6634265401 is an frugal number, since it uses more digits than its factorization.

6634265401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3560 (or 1780 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

The cubic root of 6634265401 is about 1879.0180288478.

Adding to 6634265401 its reverse (1045624366), we get a palindrome (7679889767).

The spelling of 6634265401 in words is "six billion, six hundred thirty-four million, two hundred sixty-five thousand, four hundred one".