68496784 has 10 divisors (see below), whose sum is σ = 132712550. Its totient is φ = 34248384.

The previous prime is 68496781. The next prime is 68496793. The reversal of 68496784 is 48769486.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 42771600 + 25725184 = 6540^2 + 5072^2 .

It is not an unprimeable number, because it can be changed into a prime (68496781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2140509 + ... + 2140540.

It is an arithmetic number, because the mean of its divisors is an integer number (13271255).

Almost surely, 2^68496784 is an apocalyptic number.

It is an amenable number.

68496784 is a deficient number, since it is larger than the sum of its proper divisors (64215766).

68496784 is a wasteful number, since it uses less digits than its factorization.

68496784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4281057 (or 4281051 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 52.

The square root of 68496784 is about 8276.2783906778. The cubic root of 68496784 is about 409.1570704875.

The spelling of 68496784 in words is "sixty-eight million, four hundred ninety-six thousand, seven hundred eighty-four".