261160654 has 4 divisors (see below), whose sum is σ = 391740984. Its totient is φ = 130580326.

The previous prime is 261160637. The next prime is 261160657. The reversal of 261160654 is 456061162.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261160657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65290162 + ... + 65290165.

It is an arithmetic number, because the mean of its divisors is an integer number (97935246).

Almost surely, 2^261160654 is an apocalyptic number.

261160654 is a deficient number, since it is larger than the sum of its proper divisors (130580330).

261160654 is a wasteful number, since it uses less digits than its factorization.

261160654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130580329.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 261160654 is about 16160.4657729906. The cubic root of 261160654 is about 639.1987482634.

The spelling of 261160654 in words is "two hundred sixty-one million, one hundred sixty thousand, six hundred fifty-four".