320647601 has 4 divisors (see below), whose sum is σ = 330991104. Its totient is φ = 310304100.

The previous prime is 320647597. The next prime is 320647637. The reversal of 320647601 is 106746023.

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, and also an emirpimes, since its reverse is a distinct semiprime: 106746023 = 139 ⋅767957.

It is a cyclic number.

It is not a de Polignac number, because 320647601 - 2² = 320647597 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320647681) 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, 5171705 + ... + 5171766.

It is an arithmetic number, because the mean of its divisors is an integer number (82747776).

Almost surely, 2^320647601 is an apocalyptic number.

320647601 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

320647601 is a deficient number, since it is larger than the sum of its proper divisors (10343503).

320647601 is a wasteful number, since it uses less digits than its factorization.

320647601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10343502.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 320647601 is about 17906.6356694941. The cubic root of 320647601 is about 684.4514769828.

The spelling of 320647601 in words is "three hundred twenty million, six hundred forty-seven thousand, six hundred one".