68408632 has 8 divisors (see below), whose sum is σ = 128266200. Its totient is φ = 34204312.

The previous prime is 68408617. The next prime is 68408689. The reversal of 68408632 is 23680486.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×68408632² = 9359481864222848, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 68408591 and 68408600.

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, 4275532 + ... + 4275547.

It is an arithmetic number, because the mean of its divisors is an integer number (16033275).

Almost surely, 2^68408632 is an apocalyptic number.

It is an amenable number.

68408632 is a deficient number, since it is larger than the sum of its proper divisors (59857568).

68408632 is a wasteful number, since it uses less digits than its factorization.

68408632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8551085 (or 8551081 counting only the distinct ones).

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

The square root of 68408632 is about 8270.9510940399. The cubic root of 68408632 is about 408.9814734466.

The spelling of 68408632 in words is "sixty-eight million, four hundred eight thousand, six hundred thirty-two".