1339702661 has 4 divisors (see below), whose sum is σ = 1461493824. Its totient is φ = 1217911500.

The previous prime is 1339702649. The next prime is 1339702667. The reversal of 1339702661 is 1662079331.

It is a happy number.

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 1339702661 - 2¹⁰ = 1339701637 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 (1339702667) 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, 60895565 + ... + 60895586.

It is an arithmetic number, because the mean of its divisors is an integer number (365373456).

Almost surely, 2^1339702661 is an apocalyptic number.

1339702661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1339702661 is a deficient number, since it is larger than the sum of its proper divisors (121791163).

1339702661 is a wasteful number, since it uses less digits than its factorization.

1339702661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121791162.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 1339702661 is about 36601.9488688786. The cubic root of 1339702661 is about 1102.3922210273.

It can be divided in two parts, 133970 and 2661, that added together give a palindrome (136631).

The spelling of 1339702661 in words is "one billion, three hundred thirty-nine million, seven hundred two thousand, six hundred sixty-one".