345161772 has 18 divisors (see below), whose sum is σ = 872492348. Its totient is φ = 115053912.

The previous prime is 345161723. The next prime is 345161783. The reversal of 345161772 is 277161543.

It is a happy number.

345161772 is a `hidden beast` number, since 34 + 5 + 1 + 617 + 7 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 9587827 = 345161772 / (3 + 4 + 5 + 1 + 6 + 1 + 7 + 7 + 2).

It is a zygodrome in base 3.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4793878 + ... + 4793949.

Almost surely, 2^345161772 is an apocalyptic number.

It is an amenable number.

345161772 is an abundant number, since it is smaller than the sum of its proper divisors (527330576).

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

345161772 is a wasteful number, since it uses less digits than its factorization.

345161772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9587837 (or 9587832 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 345161772 is about 18578.5298664884. The cubic root of 345161772 is about 701.4675144777.

The spelling of 345161772 in words is "three hundred forty-five million, one hundred sixty-one thousand, seven hundred seventy-two".