69072147 has 12 divisors (see below), whose sum is σ = 102091704. Its totient is φ = 44976960.

The previous prime is 69072131. The next prime is 69072169. The reversal of 69072147 is 74127096.

It is a happy number.

It is not a de Polignac number, because 69072147 - 2⁴ = 69072131 is a prime.

It is a super-2 number, since 2×69072147² = 9541922982379218, which contains 22 as substring.

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 (69072127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88854 + ... + 89627.

It is an arithmetic number, because the mean of its divisors is an integer number (8507642).

Almost surely, 2^69072147 is an apocalyptic number.

69072147 is a deficient number, since it is larger than the sum of its proper divisors (33019557).

69072147 is a wasteful number, since it uses less digits than its factorization.

69072147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178530 (or 178527 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 69072147 is about 8310.9654673810. The cubic root of 69072147 is about 410.2994976078.

The spelling of 69072147 in words is "sixty-nine million, seventy-two thousand, one hundred forty-seven".