70328636437 has 4 divisors (see below), whose sum is σ = 70330134060. Its totient is φ = 70327138816.

The previous prime is 70328636431. The next prime is 70328636471. The reversal of 70328636437 is 73463682307.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73463682307 = 179 ⋅410411633.

It can be written as a sum of positive squares in 2 ways, for example, as 35137127601 + 35191508836 = 187449^2 + 187594^2 .

It is a cyclic number.

It is not a de Polignac number, because 70328636437 - 2²⁷ = 70194418709 is a prime.

It is a super-2 number, since 2×70328636437² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70328636431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 676012 + ... + 773077.

It is an arithmetic number, because the mean of its divisors is an integer number (17582533515).

Almost surely, 2^70328636437 is an apocalyptic number.

It is an amenable number.

70328636437 is a deficient number, since it is larger than the sum of its proper divisors (1497623).

70328636437 is a wasteful number, since it uses less digits than its factorization.

70328636437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1497622.

The product of its (nonzero) digits is 3048192, while the sum is 49.

The spelling of 70328636437 in words is "seventy billion, three hundred twenty-eight million, six hundred thirty-six thousand, four hundred thirty-seven".