1336405645 has 8 divisors (see below), whose sum is σ = 1611828504. Its totient is φ = 1063696704.

The previous prime is 1336405607. The next prime is 1336405657. The reversal of 1336405645 is 5465046331.

It can be written as a sum of positive squares in 4 ways, for example, as 890604649 + 445800996 = 29843^2 + 21114^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1336405645 - 2²³ = 1328017037 is a prime.

It is a super-3 number, since 3×1336405645³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 677394 + ... + 679363.

It is an arithmetic number, because the mean of its divisors is an integer number (201478563).

Almost surely, 2^1336405645 is an apocalyptic number.

It is an amenable number.

1336405645 is a deficient number, since it is larger than the sum of its proper divisors (275422859).

1336405645 is a wasteful number, since it uses less digits than its factorization.

1336405645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356959.

The product of its (nonzero) digits is 129600, while the sum is 37.

The square root of 1336405645 is about 36556.8823205700. The cubic root of 1336405645 is about 1101.4871469452.

The spelling of 1336405645 in words is "one billion, three hundred thirty-six million, four hundred five thousand, six hundred forty-five".