71766772 has 36 divisors (see below), whose sum is σ = 159382944. Its totient is φ = 27960240.

The previous prime is 71766757. The next prime is 71766787. The reversal of 71766772 is 27766717.

It is an interprime number because it is at equal distance from previous prime (71766757) and next prime (71766787).

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a nialpdrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14488 + ... + 18799.

It is an arithmetic number, because the mean of its divisors is an integer number (4427304).

Almost surely, 2^71766772 is an apocalyptic number.

It is an amenable number.

71766772 is an abundant number, since it is smaller than the sum of its proper divisors (87616172).

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

71766772 is a wasteful number, since it uses less digits than its factorization.

71766772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33316 (or 33307 counting only the distinct ones).

The product of its digits is 172872, while the sum is 43.

The square root of 71766772 is about 8471.5271350566. The cubic root of 71766772 is about 415.5670807564.

The spelling of 71766772 in words is "seventy-one million, seven hundred sixty-six thousand, seven hundred seventy-two".