71790069 has 8 divisors (see below), whose sum is σ = 103083232. Its totient is φ = 44178480.

The previous prime is 71790053. The next prime is 71790071. The reversal of 71790069 is 96009717.

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

It is not a de Polignac number, because 71790069 - 2⁴ = 71790053 is a prime.

It is a super-2 number, since 2×71790069² = 10307628014049522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 1840771 = 71790069 / (7 + 1 + 7 + 9 + 0 + 0 + 6 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71790029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 920347 + ... + 920424.

It is an arithmetic number, because the mean of its divisors is an integer number (12885404).

Almost surely, 2^71790069 is an apocalyptic number.

It is an amenable number.

71790069 is a deficient number, since it is larger than the sum of its proper divisors (31293163).

71790069 is a wasteful number, since it uses less digits than its factorization.

71790069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1840787.

The product of its (nonzero) digits is 23814, while the sum is 39.

The square root of 71790069 is about 8472.9020412135. The cubic root of 71790069 is about 415.6120431561.

The spelling of 71790069 in words is "seventy-one million, seven hundred ninety thousand, sixty-nine".