260664398 has 4 divisors (see below), whose sum is σ = 390996600. Its totient is φ = 130332198.

The previous prime is 260664389. The next prime is 260664403. The reversal of 260664398 is 893466062.

260664398 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 893466062 = 2 ⋅446733031.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65166098 + ... + 65166101.

It is an arithmetic number, because the mean of its divisors is an integer number (97749150).

Almost surely, 2^260664398 is an apocalyptic number.

260664398 is a deficient number, since it is larger than the sum of its proper divisors (130332202).

260664398 is a wasteful number, since it uses less digits than its factorization.

260664398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130332201.

The product of its (nonzero) digits is 373248, while the sum is 44.

The square root of 260664398 is about 16145.1044592471. The cubic root of 260664398 is about 638.7936242662.

The spelling of 260664398 in words is "two hundred sixty million, six hundred sixty-four thousand, three hundred ninety-eight".