261678074 has 8 divisors (see below), whose sum is σ = 448591008. Its totient is φ = 112147740.

The previous prime is 261678073. The next prime is 261678103. The reversal of 261678074 is 470876162.

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

It is not an unprimeable number, because it can be changed into a prime (261678073) 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, 9345632 + ... + 9345659.

It is an arithmetic number, because the mean of its divisors is an integer number (56073876).

Almost surely, 2^261678074 is an apocalyptic number.

261678074 is a deficient number, since it is larger than the sum of its proper divisors (186912934).

261678074 is a wasteful number, since it uses less digits than its factorization.

261678074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18691300.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 261678074 is about 16176.4666722990. The cubic root of 261678074 is about 639.6206035862.

The spelling of 261678074 in words is "two hundred sixty-one million, six hundred seventy-eight thousand, seventy-four".