78267466 has 4 divisors (see below), whose sum is σ = 117401202. Its totient is φ = 39133732.

The previous prime is 78267463. The next prime is 78267487. The reversal of 78267466 is 66476287.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 60450625 + 17816841 = 7775^2 + 4221^2 .

It is a super-2 number, since 2×78267466² = 12251592468122312, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78267463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19566865 + ... + 19566868.

Almost surely, 2^78267466 is an apocalyptic number.

78267466 is a deficient number, since it is larger than the sum of its proper divisors (39133736).

78267466 is a wasteful number, since it uses less digits than its factorization.

78267466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39133735.

The product of its digits is 677376, while the sum is 46.

The square root of 78267466 is about 8846.8901880830. The cubic root of 78267466 is about 427.7536832040.

The spelling of 78267466 in words is "seventy-eight million, two hundred sixty-seven thousand, four hundred sixty-six".