70993378 has 4 divisors (see below), whose sum is σ = 106490070. Its totient is φ = 35496688.

The previous prime is 70993361. The next prime is 70993393. The reversal of 70993378 is 87339907.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87339907 = 191 ⋅457277.

It can be written as a sum of positive squares in only one way, i.e., 40157569 + 30835809 = 6337^2 + 5553^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17748343 + ... + 17748346.

Almost surely, 2^70993378 is an apocalyptic number.

70993378 is a deficient number, since it is larger than the sum of its proper divisors (35496692).

70993378 is a wasteful number, since it uses less digits than its factorization.

70993378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35496691.

The product of its (nonzero) digits is 285768, while the sum is 46.

The square root of 70993378 is about 8425.7568206067. The cubic root of 70993378 is about 414.0689010701.

The spelling of 70993378 in words is "seventy million, nine hundred ninety-three thousand, three hundred seventy-eight".