71650830 has 16 divisors (see below), whose sum is σ = 171962064. Its totient is φ = 19106880.

The previous prime is 71650781. The next prime is 71650847. The reversal of 71650830 is 3805617.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 2388361 = 71650830 / (7 + 1 + 6 + 5 + 0 + 8 + 3 + 0).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1194151 + ... + 1194210.

It is an arithmetic number, because the mean of its divisors is an integer number (10747629).

Almost surely, 2^71650830 is an apocalyptic number.

71650830 is an abundant number, since it is smaller than the sum of its proper divisors (100311234).

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

71650830 is a wasteful number, since it uses less digits than its factorization.

71650830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2388371.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 71650830 is about 8464.6813289101. The cubic root of 71650830 is about 415.3431718967.

The spelling of 71650830 in words is "seventy-one million, six hundred fifty thousand, eight hundred thirty".