70077478 has 4 divisors (see below), whose sum is σ = 105116220. Its totient is φ = 35038738.

The previous prime is 70077473. The next prime is 70077559. The reversal of 70077478 is 87477007.

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 a self number, because there is not a number n which added to its sum of digits gives 70077478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70077473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17519368 + ... + 17519371.

It is an arithmetic number, because the mean of its divisors is an integer number (26279055).

Almost surely, 2^70077478 is an apocalyptic number.

70077478 is a deficient number, since it is larger than the sum of its proper divisors (35038742).

70077478 is a wasteful number, since it uses less digits than its factorization.

70077478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35038741.

The product of its (nonzero) digits is 76832, while the sum is 40.

The square root of 70077478 is about 8371.2291809507. The cubic root of 70077478 is about 412.2805257942.

The spelling of 70077478 in words is "seventy million, seventy-seven thousand, four hundred seventy-eight".