921748716 has 72 divisors (see below), whose sum is σ = 2727807264. Its totient is φ = 256930560.

The previous prime is 921748693. The next prime is 921748739. The reversal of 921748716 is 617847129.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (921748693) and next prime (921748739).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34275 + ... + 54938.

It is an arithmetic number, because the mean of its divisors is an integer number (37886212).

Almost surely, 2^921748716 is an apocalyptic number.

It is an amenable number.

921748716 is an abundant number, since it is smaller than the sum of its proper divisors (1806058548).

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

921748716 is a wasteful number, since it uses less digits than its factorization.

921748716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89271 (or 89266 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The square root of 921748716 is about 30360.3148205021. The cubic root of 921748716 is about 973.2046614273.

The spelling of 921748716 in words is "nine hundred twenty-one million, seven hundred forty-eight thousand, seven hundred sixteen".