69072345 has 40 divisors (see below), whose sum is σ = 128109960. Its totient is φ = 35562240.

The previous prime is 69072317. The next prime is 69072347. The reversal of 69072345 is 54327096.

It can be written as a sum of positive squares in 4 ways, for example, as 16842816 + 52229529 = 4104^2 + 7227^2 .

It is not a de Polignac number, because 69072345 - 2¹³ = 69064153 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (69072347) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 8805 + ... + 14685.

It is an arithmetic number, because the mean of its divisors is an integer number (3202749).

Almost surely, 2^69072345 is an apocalyptic number.

It is an amenable number.

69072345 is a deficient number, since it is larger than the sum of its proper divisors (59037615).

69072345 is a wasteful number, since it uses less digits than its factorization.

69072345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5927 (or 5918 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 69072345 is about 8310.9773793459. The cubic root of 69072345 is about 410.2998896578.

Adding to 69072345 its sum of digits (36), we get a triangular number (69072381 = T₁₁₇₅₃).

The spelling of 69072345 in words is "sixty-nine million, seventy-two thousand, three hundred forty-five".