68470730 has 16 divisors (see below), whose sum is σ = 130497480. Its totient is φ = 25777152.

The previous prime is 68470729. The next prime is 68470733. The reversal of 68470730 is 3707486.

It can be written as a sum of positive squares in 4 ways, for example, as 49434961 + 19035769 = 7031^2 + 4363^2 .

It is not an unprimeable number, because it can be changed into a prime (68470733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201215 + ... + 201554.

Almost surely, 2^68470730 is an apocalyptic number.

68470730 is a deficient number, since it is larger than the sum of its proper divisors (62026750).

68470730 is a wasteful number, since it uses less digits than its factorization.

68470730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402793.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 68470730 is about 8274.7042243213. The cubic root of 68470730 is about 409.1051871261.

The spelling of 68470730 in words is "sixty-eight million, four hundred seventy thousand, seven hundred thirty".