71650642 has 40 divisors (see below), whose sum is σ = 128666736. Its totient is φ = 29906856.

The previous prime is 71650637. The next prime is 71650651. The reversal of 71650642 is 24605617.

It is a happy 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 19 ways as a sum of consecutive naturals, for example, 206313 + ... + 206659.

Almost surely, 2^71650642 is an apocalyptic number.

71650642 is a deficient number, since it is larger than the sum of its proper divisors (57016094).

71650642 is an equidigital number, since it uses as much as digits as its factorization.

71650642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420 (or 399 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 71650642 is about 8464.6702239367. The cubic root of 71650642 is about 415.3428086323.

The spelling of 71650642 in words is "seventy-one million, six hundred fifty thousand, six hundred forty-two".