72810618 has 8 divisors (see below), whose sum is σ = 145621248. Its totient is φ = 24270204.

The previous prime is 72810613. The next prime is 72810631. The reversal of 72810618 is 81601827.

It is a happy number.

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

72810618 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72810613) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 6067546 + ... + 6067557.

It is an arithmetic number, because the mean of its divisors is an integer number (18202656).

Almost surely, 2^72810618 is an apocalyptic number.

72810618 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72810618 is a wasteful number, since it uses less digits than its factorization.

72810618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12135108.

The product of its (nonzero) digits is 5376, while the sum is 33.

The square root of 72810618 is about 8532.9138047914. The cubic root of 72810618 is about 417.5721949566.

The spelling of 72810618 in words is "seventy-two million, eight hundred ten thousand, six hundred eighteen".