71747070 has 64 divisors (see below), whose sum is σ = 178770240. Its totient is φ = 18413568.

The previous prime is 71747063. The next prime is 71747077. The reversal of 71747070 is 7074717.

It is an interprime number because it is at equal distance from previous prime (71747063) and next prime (71747077).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71747077) 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, 120694 + ... + 121286.

It is an arithmetic number, because the mean of its divisors is an integer number (2793285).

Almost surely, 2^71747070 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71747070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89385120).

71747070 is an abundant number, since it is smaller than the sum of its proper divisors (107023170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71747070 is a wasteful number, since it uses less digits than its factorization.

71747070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749.

The product of its (nonzero) digits is 9604, while the sum is 33.

The square root of 71747070 is about 8470.3642188515. The cubic root of 71747070 is about 415.5290489870.

The spelling of 71747070 in words is "seventy-one million, seven hundred forty-seven thousand, seventy".