1336400661 has 8 divisors (see below), whose sum is σ = 1782059104. Its totient is φ = 890838000.

The previous prime is 1336400647. The next prime is 1336400677. The reversal of 1336400661 is 1660046331.

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

It is not a de Polignac number, because 1336400661 - 2⁵ = 1336400629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1336400641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20286 + ... + 55536.

It is an arithmetic number, because the mean of its divisors is an integer number (222757388).

Almost surely, 2^1336400661 is an apocalyptic number.

It is an amenable number.

1336400661 is a deficient number, since it is larger than the sum of its proper divisors (445658443).

1336400661 is a wasteful number, since it uses less digits than its factorization.

1336400661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47891.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 1336400661 is about 36556.8141527677. The cubic root of 1336400661 is about 1101.4857776457.

Adding to 1336400661 its reverse (1660046331), we get a palindrome (2996446992).

The spelling of 1336400661 in words is "one billion, three hundred thirty-six million, four hundred thousand, six hundred sixty-one".