70438887 has 12 divisors (see below), whose sum is σ = 103179024. Its totient is φ = 46297440.

The previous prime is 70438873. The next prime is 70438891. The reversal of 70438887 is 78883407.

It is not a de Polignac number, because 70438887 - 2¹⁴ = 70422503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70438087) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54478 + ... + 55755.

It is an arithmetic number, because the mean of its divisors is an integer number (8598252).

Almost surely, 2^70438887 is an apocalyptic number.

70438887 is a deficient number, since it is larger than the sum of its proper divisors (32740137).

70438887 is a wasteful number, since it uses less digits than its factorization.

70438887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110310 (or 110307 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The square root of 70438887 is about 8392.7877966740. The cubic root of 70438887 is about 412.9880592279.

The spelling of 70438887 in words is "seventy million, four hundred thirty-eight thousand, eight hundred eighty-seven".