1064798197 has 4 divisors (see below), whose sum is σ = 1075775596. Its totient is φ = 1053820800.

The previous prime is 1064798183. The next prime is 1064798227. The reversal of 1064798197 is 7918974601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7918974601 = 541 ⋅14637661.

It can be written as a sum of positive squares in 2 ways, for example, as 252206161 + 812592036 = 15881^2 + 28506^2 .

It is a cyclic number.

It is not a de Polignac number, because 1064798197 - 2¹¹ = 1064796149 is a prime.

It is a super-2 number, since 2×1064798197² = 2267590400668901618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1064798897) 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, 5488554 + ... + 5488747.

It is an arithmetic number, because the mean of its divisors is an integer number (268943899).

Almost surely, 2^1064798197 is an apocalyptic number.

It is an amenable number.

1064798197 is a deficient number, since it is larger than the sum of its proper divisors (10977399).

1064798197 is an equidigital number, since it uses as much as digits as its factorization.

1064798197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10977398.

The product of its (nonzero) digits is 762048, while the sum is 52.

The square root of 1064798197 is about 32631.2457163376. The cubic root of 1064798197 is about 1021.1489670319.

The spelling of 1064798197 in words is "one billion, sixty-four million, seven hundred ninety-eight thousand, one hundred ninety-seven".