72946766 has 4 divisors (see below), whose sum is σ = 109420152. Its totient is φ = 36473382.

The previous prime is 72946759. The next prime is 72946771. The reversal of 72946766 is 66764927.

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

It is a self number, because there is not a number n which added to its sum of digits gives 72946766.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18236690 + ... + 18236693.

It is an arithmetic number, because the mean of its divisors is an integer number (27355038).

Almost surely, 2^72946766 is an apocalyptic number.

72946766 is a deficient number, since it is larger than the sum of its proper divisors (36473386).

72946766 is a wasteful number, since it uses less digits than its factorization.

72946766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36473385.

The product of its digits is 762048, while the sum is 47.

The square root of 72946766 is about 8540.8878929535. The cubic root of 72946766 is about 417.8323045489.

The spelling of 72946766 in words is "seventy-two million, nine hundred forty-six thousand, seven hundred sixty-six".