70302137 has 4 divisors (see below), whose sum is σ = 70357476. Its totient is φ = 70246800.

The previous prime is 70302131. The next prime is 70302143. The reversal of 70302137 is 73120307.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (70302131) and next prime (70302143).

It can be written as a sum of positive squares in 2 ways, for example, as 28686736 + 41615401 = 5356^2 + 6451^2 .

It is a cyclic number.

It is not a de Polignac number, because 70302137 - 2⁴ = 70302121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70302131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25718 + ... + 28319.

It is an arithmetic number, because the mean of its divisors is an integer number (17589369).

Almost surely, 2^70302137 is an apocalyptic number.

It is an amenable number.

70302137 is a deficient number, since it is larger than the sum of its proper divisors (55339).

70302137 is a wasteful number, since it uses less digits than its factorization.

70302137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55338.

The product of its (nonzero) digits is 882, while the sum is 23.

The square root of 70302137 is about 8384.6369629221. The cubic root of 70302137 is about 412.7206278580.

The spelling of 70302137 in words is "seventy million, three hundred two thousand, one hundred thirty-seven".