966555440 has 40 divisors (see below), whose sum is σ = 2307984720. Its totient is φ = 376171776.

The previous prime is 966555437. The next prime is 966555449. The reversal of 966555440 is 44555669.

It is a tau number, because it is divible by the number of its divisors (40).

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 966555391 and 966555400.

It is not an unprimeable number, because it can be changed into a prime (966555449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160310 + ... + 166229.

It is an arithmetic number, because the mean of its divisors is an integer number (57699618).

Almost surely, 2^966555440 is an apocalyptic number.

It is an amenable number.

966555440 is an abundant number, since it is smaller than the sum of its proper divisors (1341429280).

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

966555440 is a wasteful number, since it uses less digits than its factorization.

966555440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326589 (or 326583 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 44.

The square root of 966555440 is about 31089.4747462867. The cubic root of 966555440 is about 988.7251692846.

The spelling of 966555440 in words is "nine hundred sixty-six million, five hundred fifty-five thousand, four hundred forty".