73667816 has 32 divisors (see below), whose sum is σ = 143337600. Its totient is φ = 35468160.

The previous prime is 73667791. The next prime is 73667819. The reversal of 73667816 is 61876637.

It is a happy number.

It is a super-2 number, since 2×73667816² = 10853894228419712, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (73667819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24491 + ... + 27333.

It is an arithmetic number, because the mean of its divisors is an integer number (4479300).

Almost surely, 2^73667816 is an apocalyptic number.

It is an amenable number.

73667816 is a deficient number, since it is larger than the sum of its proper divisors (69669784).

73667816 is a wasteful number, since it uses less digits than its factorization.

73667816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2969 (or 2965 counting only the distinct ones).

The product of its digits is 254016, while the sum is 44.

The square root of 73667816 is about 8582.9957474066. The cubic root of 73667816 is about 419.2044957319.

The spelling of 73667816 in words is "seventy-three million, six hundred sixty-seven thousand, eight hundred sixteen".