1275977064 has 16 divisors (see below), whose sum is σ = 3189942720. Its totient is φ = 425325680.

The previous prime is 1275977023. The next prime is 1275977089. The reversal of 1275977064 is 4607795721.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26582832 + ... + 26582879.

It is an arithmetic number, because the mean of its divisors is an integer number (199371420).

Almost surely, 2^1275977064 is an apocalyptic number.

It is an amenable number.

1275977064 is an abundant number, since it is smaller than the sum of its proper divisors (1913965656).

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

1275977064 is a wasteful number, since it uses less digits than its factorization.

1275977064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53165720 (or 53165716 counting only the distinct ones).

The product of its (nonzero) digits is 740880, while the sum is 48.

The square root of 1275977064 is about 35720.8211551750. The cubic root of 1275977064 is about 1084.6283603343.

The spelling of 1275977064 in words is "one billion, two hundred seventy-five million, nine hundred seventy-seven thousand, sixty-four".