1265327670 has 64 divisors (see below), whose sum is σ = 3088834560. Its totient is φ = 331688448.

The previous prime is 1265327669. The next prime is 1265327677. The reversal of 1265327670 is 767235621.

It is a super-2 number, since 2×1265327670² = 3202108224935257800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265327677) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 429061 + ... + 431999.

It is an arithmetic number, because the mean of its divisors is an integer number (48263040).

Almost surely, 2^1265327670 is an apocalyptic number.

1265327670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1265327670 is an abundant number, since it is smaller than the sum of its proper divisors (1823506890).

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

1265327670 is a wasteful number, since it uses less digits than its factorization.

1265327670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3189.

The product of its (nonzero) digits is 105840, while the sum is 39.

The square root of 1265327670 is about 35571.4445869155. Note that the first 3 decimals coincide. The cubic root of 1265327670 is about 1081.6024651083.

The spelling of 1265327670 in words is "one billion, two hundred sixty-five million, three hundred twenty-seven thousand, six hundred seventy".