70751489 has 4 divisors (see below), whose sum is σ = 70775124. Its totient is φ = 70727856.

The previous prime is 70751479. The next prime is 70751507. The reversal of 70751489 is 98415707.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98415707 = 13 ⋅7570439.

It can be written as a sum of positive squares in 2 ways, for example, as 44823025 + 25928464 = 6695^2 + 5092^2 .

It is a cyclic number.

It is not a de Polignac number, because 70751489 - 2²⁴ = 53974273 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (70751419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6542 + ... + 13575.

It is an arithmetic number, because the mean of its divisors is an integer number (17693781).

Almost surely, 2^70751489 is an apocalyptic number.

It is an amenable number.

70751489 is a deficient number, since it is larger than the sum of its proper divisors (23635).

70751489 is a wasteful number, since it uses less digits than its factorization.

70751489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23634.

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 70751489 is about 8411.3904320273. The cubic root of 70751489 is about 413.5980933939.

The spelling of 70751489 in words is "seventy million, seven hundred fifty-one thousand, four hundred eighty-nine".