78261883 has 8 divisors (see below), whose sum is σ = 90447840. Its totient is φ = 66327360.

The previous prime is 78261881. The next prime is 78261901. The reversal of 78261883 is 38816287.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 78261883 - 2¹ = 78261881 is a prime.

It is a super-2 number, since 2×78261883² = 12249844661411378, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78261881) 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, 62188 + ... + 63433.

It is an arithmetic number, because the mean of its divisors is an integer number (11305980).

Almost surely, 2^78261883 is an apocalyptic number.

78261883 is a deficient number, since it is larger than the sum of its proper divisors (12185957).

78261883 is a wasteful number, since it uses less digits than its factorization.

78261883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125717.

The product of its digits is 129024, while the sum is 43.

The square root of 78261883 is about 8846.5746478510. The cubic root of 78261883 is about 427.7435120745.

The spelling of 78261883 in words is "seventy-eight million, two hundred sixty-one thousand, eight hundred eighty-three".