78198466 has 8 divisors (see below), whose sum is σ = 118782720. Its totient is φ = 38604228.

The previous prime is 78198451. The next prime is 78198469. The reversal of 78198466 is 66489187.

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

It is a super-2 number, since 2×78198466² = 12230000169506312, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78198469) 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, 247306 + ... + 247621.

It is an arithmetic number, because the mean of its divisors is an integer number (14847840).

Almost surely, 2^78198466 is an apocalyptic number.

78198466 is a deficient number, since it is larger than the sum of its proper divisors (40584254).

78198466 is a wasteful number, since it uses less digits than its factorization.

78198466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495008.

The product of its digits is 580608, while the sum is 49.

The square root of 78198466 is about 8842.9896528267. The cubic root of 78198466 is about 427.6279447872.

The spelling of 78198466 in words is "seventy-eight million, one hundred ninety-eight thousand, four hundred sixty-six".