966721375 has 8 divisors (see below), whose sum is σ = 1206468432. Its totient is φ = 773377000.

The previous prime is 966721373. The next prime is 966721397. The reversal of 966721375 is 573127669.

It is not a de Polignac number, because 966721375 - 2¹ = 966721373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (966721373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3866761 + ... + 3867010.

It is an arithmetic number, because the mean of its divisors is an integer number (150808554).

Almost surely, 2^966721375 is an apocalyptic number.

966721375 is a deficient number, since it is larger than the sum of its proper divisors (239747057).

966721375 is an equidigital number, since it uses as much as digits as its factorization.

966721375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7733786 (or 7733776 counting only the distinct ones).

The product of its digits is 476280, while the sum is 46.

The square root of 966721375 is about 31092.1433001972. The cubic root of 966721375 is about 988.7817463887.

The spelling of 966721375 in words is "nine hundred sixty-six million, seven hundred twenty-one thousand, three hundred seventy-five".