78262966 has 4 divisors (see below), whose sum is σ = 117394452. Its totient is φ = 39131482.

The previous prime is 78262963. The next prime is 78262979. The reversal of 78262966 is 66926287.

It is a happy number.

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

It is a super-2 number, since 2×78262966² = 12250183694234312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78262963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19565740 + ... + 19565743.

It is an arithmetic number, because the mean of its divisors is an integer number (29348613).

Almost surely, 2^78262966 is an apocalyptic number.

78262966 is a deficient number, since it is larger than the sum of its proper divisors (39131486).

78262966 is a wasteful number, since it uses less digits than its factorization.

78262966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39131485.

The product of its digits is 435456, while the sum is 46.

The square root of 78262966 is about 8846.6358577710. The cubic root of 78262966 is about 427.7454851256.

The spelling of 78262966 in words is "seventy-eight million, two hundred sixty-two thousand, nine hundred sixty-six".