71075620 has 48 divisors (see below), whose sum is σ = 186092928. Its totient is φ = 22152960.

The previous prime is 71075617. The next prime is 71075621. The reversal of 71075620 is 2657017.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (71075621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21537 + ... + 24616.

It is an arithmetic number, because the mean of its divisors is an integer number (3876936).

Almost surely, 2^71075620 is an apocalyptic number.

71075620 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

71075620 is an abundant number, since it is smaller than the sum of its proper divisors (115017308).

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

71075620 is a wasteful number, since it uses less digits than its factorization.

71075620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46180 (or 46178 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 71075620 is about 8430.6358004601. The cubic root of 71075620 is about 414.2287315319.

The spelling of 71075620 in words is "seventy-one million, seventy-five thousand, six hundred twenty".