70783078 has 4 divisors (see below), whose sum is σ = 106174620. Its totient is φ = 35391538.

The previous prime is 70783073. The next prime is 70783079. The reversal of 70783078 is 87038707.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 70783078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70783073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17695768 + ... + 17695771.

It is an arithmetic number, because the mean of its divisors is an integer number (26543655).

Almost surely, 2^70783078 is an apocalyptic number.

70783078 is a deficient number, since it is larger than the sum of its proper divisors (35391542).

70783078 is a wasteful number, since it uses less digits than its factorization.

70783078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35391541.

The product of its (nonzero) digits is 65856, while the sum is 40.

The square root of 70783078 is about 8413.2679738613. The cubic root of 70783078 is about 413.6596384176.

The spelling of 70783078 in words is "seventy million, seven hundred eighty-three thousand, seventy-eight".