261987202 has 8 divisors (see below), whose sum is σ = 393414912. Its totient is φ = 130848900.

The previous prime is 261987197. The next prime is 261987217. The reversal of 261987202 is 202789162.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70074 + ... + 73717.

It is an arithmetic number, because the mean of its divisors is an integer number (49176864).

Almost surely, 2^261987202 is an apocalyptic number.

261987202 is a deficient number, since it is larger than the sum of its proper divisors (131427710).

261987202 is a wasteful number, since it uses less digits than its factorization.

261987202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144704.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 261987202 is about 16186.0187198706. The cubic root of 261987202 is about 639.8723720112.

The spelling of 261987202 in words is "two hundred sixty-one million, nine hundred eighty-seven thousand, two hundred two".