1345717970 has 16 divisors (see below), whose sum is σ = 2423223000. Its totient is φ = 538080384.

The previous prime is 1345717963. The next prime is 1345717973. The reversal of 1345717970 is 797175431.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 791915881 + 553802089 = 28141^2 + 23533^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1345717973) 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, 3014 + ... + 51966.

Almost surely, 2^1345717970 is an apocalyptic number.

1345717970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1345717970 is a deficient number, since it is larger than the sum of its proper divisors (1077505030).

1345717970 is a wasteful number, since it uses less digits than its factorization.

1345717970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51709.

The product of its (nonzero) digits is 185220, while the sum is 44.

The square root of 1345717970 is about 36684.0288136404. The cubic root of 1345717970 is about 1104.0396835356.

The spelling of 1345717970 in words is "one billion, three hundred forty-five million, seven hundred seventeen thousand, nine hundred seventy".