70321437 has 12 divisors (see below), whose sum is σ = 104053404. Its totient is φ = 45737280.

The previous prime is 70321429. The next prime is 70321439. The reversal of 70321437 is 73412307.

It can be written as a sum of positive squares in 2 ways, for example, as 11431161 + 58890276 = 3381^2 + 7674^2 .

It is not a de Polignac number, because 70321437 - 2³ = 70321429 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70321437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70321439) 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, 94918 + ... + 95655.

It is an arithmetic number, because the mean of its divisors is an integer number (8671117).

Almost surely, 2^70321437 is an apocalyptic number.

It is an amenable number.

70321437 is a deficient number, since it is larger than the sum of its proper divisors (33731967).

70321437 is a wasteful number, since it uses less digits than its factorization.

70321437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190620 (or 190617 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 70321437 is about 8385.7877984123. The cubic root of 70321437 is about 412.7583923777.

The spelling of 70321437 in words is "seventy million, three hundred twenty-one thousand, four hundred thirty-seven".