261733396 has 6 divisors (see below), whose sum is σ = 458033450. Its totient is φ = 130866696.

The previous prime is 261733393. The next prime is 261733429. The reversal of 261733396 is 693337162.

It can be written as a sum of positive squares in only one way, i.e., 225300100 + 36433296 = 15010^2 + 6036^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261733393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32716671 + ... + 32716678.

Almost surely, 2^261733396 is an apocalyptic number.

It is an amenable number.

261733396 is a deficient number, since it is larger than the sum of its proper divisors (196300054).

261733396 is a wasteful number, since it uses less digits than its factorization.

261733396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65433353 (or 65433351 counting only the distinct ones).

The product of its digits is 122472, while the sum is 40.

The square root of 261733396 is about 16178.1765350734. The cubic root of 261733396 is about 639.6656749941.

The spelling of 261733396 in words is "two hundred sixty-one million, seven hundred thirty-three thousand, three hundred ninety-six".