70372087 has 4 divisors (see below), whose sum is σ = 70705816. Its totient is φ = 70038360.

The previous prime is 70372079. The next prime is 70372091. The reversal of 70372087 is 78027307.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78027307 = 1873 ⋅41659.

It is a cyclic number.

It is not a de Polignac number, because 70372087 - 2³ = 70372079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70372487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166548 + ... + 166969.

It is an arithmetic number, because the mean of its divisors is an integer number (17676454).

Almost surely, 2^70372087 is an apocalyptic number.

70372087 is a deficient number, since it is larger than the sum of its proper divisors (333729).

70372087 is a wasteful number, since it uses less digits than its factorization.

70372087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333728.

The product of its (nonzero) digits is 16464, while the sum is 34.

The square root of 70372087 is about 8388.8072453717. The cubic root of 70372087 is about 412.8574669328.

The spelling of 70372087 in words is "seventy million, three hundred seventy-two thousand, eighty-seven".