261297962 has 4 divisors (see below), whose sum is σ = 391946946. Its totient is φ = 130648980.

The previous prime is 261297947. The next prime is 261297979. The reversal of 261297962 is 269792162.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 249608401 + 11689561 = 15799^2 + 3419^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65324489 + ... + 65324492.

Almost surely, 2^261297962 is an apocalyptic number.

261297962 is a deficient number, since it is larger than the sum of its proper divisors (130648984).

261297962 is a wasteful number, since it uses less digits than its factorization.

261297962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130648983.

The product of its digits is 163296, while the sum is 44.

The square root of 261297962 is about 16164.7134833872. The cubic root of 261297962 is about 639.3107504906.

The spelling of 261297962 in words is "two hundred sixty-one million, two hundred ninety-seven thousand, nine hundred sixty-two".