71697020 has 12 divisors (see below), whose sum is σ = 150563784. Its totient is φ = 28678800.

The previous prime is 71697011. The next prime is 71697029. The reversal of 71697020 is 2079617.

It is an interprime number because it is at equal distance from previous prime (71697011) and next prime (71697029).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71697029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1792406 + ... + 1792445.

It is an arithmetic number, because the mean of its divisors is an integer number (12546982).

Almost surely, 2^71697020 is an apocalyptic number.

It is an amenable number.

71697020 is an abundant number, since it is smaller than the sum of its proper divisors (78866764).

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

71697020 is a wasteful number, since it uses less digits than its factorization.

71697020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3584860 (or 3584858 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 71697020 is about 8467.4092850175. The cubic root of 71697020 is about 415.4324036152.

The spelling of 71697020 in words is "seventy-one million, six hundred ninety-seven thousand, twenty".