70487137 has 12 divisors (see below), whose sum is σ = 82244160. Its totient is φ = 60234216.

The previous prime is 70487129. The next prime is 70487141. The reversal of 70487137 is 73178407.

It is not a de Polignac number, because 70487137 - 2³ = 70487129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70487096 and 70487105.

It is not an unprimeable number, because it can be changed into a prime (70487107) 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 in 11 ways as a sum of consecutive naturals, for example, 15588 + ... + 19594.

It is an arithmetic number, because the mean of its divisors is an integer number (6853680).

Almost surely, 2^70487137 is an apocalyptic number.

It is an amenable number.

70487137 is a deficient number, since it is larger than the sum of its proper divisors (11757023).

70487137 is a wasteful number, since it uses less digits than its factorization.

70487137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4380 (or 4373 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 37.

The square root of 70487137 is about 8395.6617964280. The cubic root of 70487137 is about 413.0823353992.

The spelling of 70487137 in words is "seventy million, four hundred eighty-seven thousand, one hundred thirty-seven".