1345774761 has 6 divisors (see below), whose sum is σ = 1943896890. Its totient is φ = 897183168.

The previous prime is 1345774753. The next prime is 1345774763. The reversal of 1345774761 is 1674775431.

1345774761 is a `hidden beast` number, since 1 + 3 + 4 + 577 + 4 + 76 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1081094400 + 264680361 = 32880^2 + 16269^2 .

It is not a de Polignac number, because 1345774761 - 2³ = 1345774753 is a prime.

It is a super-2 number, since 2×1345774761² = 3622219414689214242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1345774763) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 74765256 + ... + 74765273.

It is an arithmetic number, because the mean of its divisors is an integer number (323982815).

Almost surely, 2^1345774761 is an apocalyptic number.

It is an amenable number.

1345774761 is a deficient number, since it is larger than the sum of its proper divisors (598122129).

1345774761 is a wasteful number, since it uses less digits than its factorization.

1345774761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149530535 (or 149530532 counting only the distinct ones).

The product of its digits is 493920, while the sum is 45.

The square root of 1345774761 is about 36684.8028616756. The cubic root of 1345774761 is about 1104.0552139407.

The spelling of 1345774761 in words is "one billion, three hundred forty-five million, seven hundred seventy-four thousand, seven hundred sixty-one".