70419981 has 16 divisors (see below), whose sum is σ = 96030720. Its totient is φ = 45887280.

The previous prime is 70419977. The next prime is 70419983. The reversal of 70419981 is 18991407.

It is a happy number.

It is not a de Polignac number, because 70419981 - 2² = 70419977 is a prime.

It is a super-2 number, since 2×70419981² = 9917947448080722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70419983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32766 + ... + 34848.

It is an arithmetic number, because the mean of its divisors is an integer number (6001920).

Almost surely, 2^70419981 is an apocalyptic number.

It is an amenable number.

70419981 is a deficient number, since it is larger than the sum of its proper divisors (25610739).

70419981 is a wasteful number, since it uses less digits than its factorization.

70419981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2336.

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 70419981 is about 8391.6613968868. The cubic root of 70419981 is about 412.9511068604.

The spelling of 70419981 in words is "seventy million, four hundred nineteen thousand, nine hundred eighty-one".