261166046 has 8 divisors (see below), whose sum is σ = 394244760. Its totient is φ = 129751128.

The previous prime is 261166043. The next prime is 261166049. The reversal of 261166046 is 640661162.

It is an interprime number because it is at equal distance from previous prime (261166043) and next prime (261166049).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261166043) 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, 415556 + ... + 416183.

It is an arithmetic number, because the mean of its divisors is an integer number (49280595).

Almost surely, 2^261166046 is an apocalyptic number.

261166046 is a deficient number, since it is larger than the sum of its proper divisors (133078714).

261166046 is a wasteful number, since it uses less digits than its factorization.

261166046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831898.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 261166046 is about 16160.6325990043. The cubic root of 261166046 is about 639.2031472618.

The spelling of 261166046 in words is "two hundred sixty-one million, one hundred sixty-six thousand, forty-six".