69478145 has 8 divisors (see below), whose sum is σ = 90953280. Its totient is φ = 50529520.

The previous prime is 69478139. The next prime is 69478159. The reversal of 69478145 is 54187496.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 69478145 - 2⁶ = 69478081 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 69478096 and 69478105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 631565 + ... + 631674.

It is an arithmetic number, because the mean of its divisors is an integer number (11369160).

Almost surely, 2^69478145 is an apocalyptic number.

It is an amenable number.

69478145 is a deficient number, since it is larger than the sum of its proper divisors (21475135).

69478145 is a wasteful number, since it uses less digits than its factorization.

69478145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263255.

The product of its digits is 241920, while the sum is 44.

The square root of 69478145 is about 8335.3551214090. The cubic root of 69478145 is about 411.1018251426.

The spelling of 69478145 in words is "sixty-nine million, four hundred seventy-eight thousand, one hundred forty-five".