1328506697 has 8 divisors (see below), whose sum is σ = 1518994752. Its totient is φ = 1138194000.

The previous prime is 1328506691. The next prime is 1328506789. The reversal of 1328506697 is 7966058231.

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 1328506697 - 2¹⁸ = 1328244553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1328506691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27179 + ... + 58272.

It is an arithmetic number, because the mean of its divisors is an integer number (189874344).

Almost surely, 2^1328506697 is an apocalyptic number.

It is an amenable number.

1328506697 is a deficient number, since it is larger than the sum of its proper divisors (190488055).

1328506697 is an equidigital number, since it uses as much as digits as its factorization.

1328506697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87679.

The product of its (nonzero) digits is 544320, while the sum is 47.

The square root of 1328506697 is about 36448.6858062125. The cubic root of 1328506697 is about 1099.3127103342.

The spelling of 1328506697 in words is "one billion, three hundred twenty-eight million, five hundred six thousand, six hundred ninety-seven".