69013945 has 32 divisors (see below), whose sum is σ = 111202560. Its totient is φ = 39709440.

The previous prime is 69013943. The next prime is 69013949. The reversal of 69013945 is 54931096.

It is not a de Polignac number, because 69013945 - 2¹ = 69013943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (69013943) 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, 1890 + ... + 11899.

It is an arithmetic number, because the mean of its divisors is an integer number (3475080).

Almost surely, 2^69013945 is an apocalyptic number.

69013945 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

69013945 is a deficient number, since it is larger than the sum of its proper divisors (42188615).

69013945 is a wasteful number, since it uses less digits than its factorization.

69013945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13825.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 69013945 is about 8307.4632108725. The cubic root of 69013945 is about 410.1842221896.

The spelling of 69013945 in words is "sixty-nine million, thirteen thousand, nine hundred forty-five".