867655261 has 8 divisors (see below), whose sum is σ = 947327904. Its totient is φ = 788115120.

The previous prime is 867655241. The next prime is 867655267. The reversal of 867655261 is 162556768.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-867655261 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 (867655267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19171 + ... + 45856.

It is an arithmetic number, because the mean of its divisors is an integer number (118415988).

Almost surely, 2^867655261 is an apocalyptic number.

It is an amenable number.

867655261 is a deficient number, since it is larger than the sum of its proper divisors (79672643).

867655261 is a wasteful number, since it uses less digits than its factorization.

867655261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66251.

The product of its digits is 604800, while the sum is 46.

The square root of 867655261 is about 29455.9885422303. The cubic root of 867655261 is about 953.7818815949.

The spelling of 867655261 in words is "eight hundred sixty-seven million, six hundred fifty-five thousand, two hundred sixty-one".