261462797 has 4 divisors (see below), whose sum is σ = 261581916. Its totient is φ = 261343680.

The previous prime is 261462787. The next prime is 261462809. The reversal of 261462797 is 797264162.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 797264162 = 2 ⋅398632081.

It can be written as a sum of positive squares in 2 ways, for example, as 96314596 + 165148201 = 9814^2 + 12851^2 .

It is a cyclic number.

It is not a de Polignac number, because 261462797 - 2¹⁴ = 261446413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261462767) 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, 56204 + ... + 60677.

It is an arithmetic number, because the mean of its divisors is an integer number (65395479).

Almost surely, 2^261462797 is an apocalyptic number.

It is an amenable number.

261462797 is a deficient number, since it is larger than the sum of its proper divisors (119119).

261462797 is a wasteful number, since it uses less digits than its factorization.

261462797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119118.

The product of its digits is 254016, while the sum is 44.

The square root of 261462797 is about 16169.8112852315. The cubic root of 261462797 is about 639.4451546976.

The spelling of 261462797 in words is "two hundred sixty-one million, four hundred sixty-two thousand, seven hundred ninety-seven".