78450466 has 8 divisors (see below), whose sum is σ = 120545964. Its totient is φ = 38268480.

The previous prime is 78450451. The next prime is 78450469. The reversal of 78450466 is 66405487.

It can be written as a sum of positive squares in 2 ways, for example, as 55935441 + 22515025 = 7479^2 + 4745^2 .

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

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (78450469) 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, 478275 + ... + 478438.

Almost surely, 2^78450466 is an apocalyptic number.

78450466 is a deficient number, since it is larger than the sum of its proper divisors (42095498).

78450466 is a wasteful number, since it uses less digits than its factorization.

78450466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 956756.

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 78450466 is about 8857.2267668836. The cubic root of 78450466 is about 428.0868058420.

The spelling of 78450466 in words is "seventy-eight million, four hundred fifty thousand, four hundred sixty-six".