78349166 has 8 divisors (see below), whose sum is σ = 134312880. Its totient is φ = 33578208.

The previous prime is 78349151. The next prime is 78349171. The reversal of 78349166 is 66194387.

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

It is a super-2 number, since 2×78349166² = 12277183625791112, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2798171 + ... + 2798198.

It is an arithmetic number, because the mean of its divisors is an integer number (16789110).

Almost surely, 2^78349166 is an apocalyptic number.

78349166 is a deficient number, since it is larger than the sum of its proper divisors (55963714).

78349166 is a wasteful number, since it uses less digits than its factorization.

78349166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5596378.

The product of its digits is 217728, while the sum is 44.

The square root of 78349166 is about 8851.5064254623. The cubic root of 78349166 is about 427.9024692608.

The spelling of 78349166 in words is "seventy-eight million, three hundred forty-nine thousand, one hundred sixty-six".