261346698 has 12 divisors (see below), whose sum is σ = 566251218. Its totient is φ = 87115560.

The previous prime is 261346697. The next prime is 261346721. The reversal of 261346698 is 896643162.

It can be written as a sum of positive squares in only one way, i.e., 188705169 + 72641529 = 13737^2 + 8523^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (261346693) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7259613 + ... + 7259648.

Almost surely, 2^261346698 is an apocalyptic number.

261346698 is an abundant number, since it is smaller than the sum of its proper divisors (304904520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

261346698 is a wasteful number, since it uses less digits than its factorization.

261346698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14519269 (or 14519266 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 261346698 is about 16166.2208941979. The cubic root of 261346698 is about 639.3504950433.

The spelling of 261346698 in words is "two hundred sixty-one million, three hundred forty-six thousand, six hundred ninety-eight".