3649320697 has 4 divisors (see below), whose sum is σ = 3981077136. Its totient is φ = 3317564260.

The previous prime is 3649320679. The next prime is 3649320751. The reversal of 3649320697 is 7960239463.

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 3649320697 - 2²³ = 3640932089 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3649320697.

It is not an unprimeable number, because it can be changed into a prime (3649320607) 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 3 ways as a sum of consecutive naturals, for example, 165878203 + ... + 165878224.

It is an arithmetic number, because the mean of its divisors is an integer number (995269284).

Almost surely, 2^3649320697 is an apocalyptic number.

It is an amenable number.

3649320697 is a deficient number, since it is larger than the sum of its proper divisors (331756439).

3649320697 is a wasteful number, since it uses less digits than its factorization.

3649320697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331756438.

The product of its (nonzero) digits is 1469664, while the sum is 49.

The square root of 3649320697 is about 60409.6076547431. The cubic root of 3649320697 is about 1539.5862014381.

The spelling of 3649320697 in words is "three billion, six hundred forty-nine million, three hundred twenty thousand, six hundred ninety-seven".