662231401 has 6 divisors (see below), whose sum is σ = 717090990. Its totient is φ = 611290368.

The previous prime is 662231357. The next prime is 662231407. The reversal of 662231401 is 104132266.

It can be written as a sum of positive squares in 3 ways, for example, as 75429225 + 586802176 = 8685^2 + 24224^2 .

It is a de Polignac number, because none of the positive numbers 2^k-662231401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (662231407) 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 5 ways as a sum of consecutive naturals, for example, 1959096 + ... + 1959433.

It is an arithmetic number, because the mean of its divisors is an integer number (119515165).

Almost surely, 2^662231401 is an apocalyptic number.

It is an amenable number.

662231401 is a deficient number, since it is larger than the sum of its proper divisors (54859589).

662231401 is a wasteful number, since it uses less digits than its factorization.

662231401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3918555 (or 3918542 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 662231401 is about 25733.8570952743. The cubic root of 662231401 is about 871.6388718881.

Adding to 662231401 its reverse (104132266), we get a palindrome (766363667).

The spelling of 662231401 in words is "six hundred sixty-two million, two hundred thirty-one thousand, four hundred one".