70391306 has 8 divisors (see below), whose sum is σ = 105632100. Its totient is φ = 35180608.

The previous prime is 70391287. The next prime is 70391309. The reversal of 70391306 is 60319307.

It can be written as a sum of positive squares in 2 ways, for example, as 69572281 + 819025 = 8341^2 + 905^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (70391309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 281 + ... + 11868.

Almost surely, 2^70391306 is an apocalyptic number.

70391306 is a deficient number, since it is larger than the sum of its proper divisors (35240794).

70391306 is a wasteful number, since it uses less digits than its factorization.

70391306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15048.

The product of its (nonzero) digits is 3402, while the sum is 29.

The square root of 70391306 is about 8389.9526816306. The cubic root of 70391306 is about 412.8950480523.

The spelling of 70391306 in words is "seventy million, three hundred ninety-one thousand, three hundred six".