78066031 has 8 divisors (see below), whose sum is σ = 80137728. Its totient is φ = 76020000.

The previous prime is 78066007. The next prime is 78066047. The reversal of 78066031 is 13066087.

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 78066031 - 2¹⁷ = 77934959 is a prime.

It is a super-2 number, since 2×78066031² = 12188610392185922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78065984 and 78066002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78066061) 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, 175 + ... + 12496.

It is an arithmetic number, because the mean of its divisors is an integer number (10017216).

Almost surely, 2^78066031 is an apocalyptic number.

78066031 is a deficient number, since it is larger than the sum of its proper divisors (2071697).

78066031 is a wasteful number, since it uses less digits than its factorization.

78066031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12833.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 78066031 is about 8835.4983447455. The cubic root of 78066031 is about 427.3864016531.

The spelling of 78066031 in words is "seventy-eight million, sixty-six thousand, thirty-one".