70978019 has 8 divisors (see below), whose sum is σ = 82773600. Its totient is φ = 60838008.

The previous prime is 70978013. The next prime is 70978049. The reversal of 70978019 is 91087907.

It is not a de Polignac number, because 70978019 - 2⁸ = 70977763 is a prime.

It is a super-2 number, since 2×70978019² = 10075758362328722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (70978013) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 103124 + ... + 103809.

It is an arithmetic number, because the mean of its divisors is an integer number (10346700).

Almost surely, 2^70978019 is an apocalyptic number.

70978019 is a deficient number, since it is larger than the sum of its proper divisors (11795581).

70978019 is an equidigital number, since it uses as much as digits as its factorization.

70978019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206954 (or 206940 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 41.

The square root of 70978019 is about 8424.8453398267. The cubic root of 70978019 is about 414.0390384590.

The spelling of 70978019 in words is "seventy million, nine hundred seventy-eight thousand, nineteen".