72808711 has 4 divisors (see below), whose sum is σ = 74776552. Its totient is φ = 70840872.

The previous prime is 72808709. The next prime is 72808717. The reversal of 72808711 is 11780827.

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

It is a cyclic number.

It is not a de Polignac number, because 72808711 - 2¹ = 72808709 is a prime.

It is a super-2 number, since 2×72808711² = 10602216794963042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72808717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 983865 + ... + 983938.

It is an arithmetic number, because the mean of its divisors is an integer number (18694138).

Almost surely, 2^72808711 is an apocalyptic number.

72808711 is a deficient number, since it is larger than the sum of its proper divisors (1967841).

72808711 is a wasteful number, since it uses less digits than its factorization.

72808711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1967840.

The product of its (nonzero) digits is 6272, while the sum is 34.

The square root of 72808711 is about 8532.8020602848. The cubic root of 72808711 is about 417.5685493476.

The spelling of 72808711 in words is "seventy-two million, eight hundred eight thousand, seven hundred eleven".