83642068 has 6 divisors (see below), whose sum is σ = 146373626. Its totient is φ = 41821032.

The previous prime is 83642029. The next prime is 83642081. The reversal of 83642068 is 86024638.

It can be written as a sum of positive squares in only one way, i.e., 82846404 + 795664 = 9102^2 + 892^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10455255 + ... + 10455262.

Almost surely, 2^83642068 is an apocalyptic number.

It is an amenable number.

83642068 is a deficient number, since it is larger than the sum of its proper divisors (62731558).

83642068 is a wasteful number, since it uses less digits than its factorization.

83642068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20910521 (or 20910519 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 83642068 is about 9145.6037526234. The cubic root of 83642068 is about 437.3289767458.

The spelling of 83642068 in words is "eighty-three million, six hundred forty-two thousand, sixty-eight".