70081487 has 8 divisors (see below), whose sum is σ = 82855200. Its totient is φ = 57998304.

The previous prime is 70081457. The next prime is 70081489. The reversal of 70081487 is 78418007.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-70081487 is a prime.

It is a super-2 number, since 2×70081487² = 9822829640262338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70081489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172412 + ... + 172817.

It is an arithmetic number, because the mean of its divisors is an integer number (10356900).

Almost surely, 2^70081487 is an apocalyptic number.

70081487 is a deficient number, since it is larger than the sum of its proper divisors (12773713).

70081487 is a wasteful number, since it uses less digits than its factorization.

70081487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345265.

The product of its (nonzero) digits is 12544, while the sum is 35.

The square root of 70081487 is about 8371.4686286219. The cubic root of 70081487 is about 412.2883875741.

The spelling of 70081487 in words is "seventy million, eighty-one thousand, four hundred eighty-seven".