70540765 has 4 divisors (see below), whose sum is σ = 84648924. Its totient is φ = 56432608.

The previous prime is 70540763. The next prime is 70540801. The reversal of 70540765 is 56704507.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56704507 = 6761 ⋅8387.

It can be written as a sum of positive squares in 2 ways, for example, as 15350724 + 55190041 = 3918^2 + 7429^2 .

It is a cyclic number.

It is not a de Polignac number, because 70540765 - 2¹ = 70540763 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70540765.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70540763) 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, 7054072 + ... + 7054081.

It is an arithmetic number, because the mean of its divisors is an integer number (21162231).

Almost surely, 2^70540765 is an apocalyptic number.

It is an amenable number.

70540765 is a deficient number, since it is larger than the sum of its proper divisors (14108159).

70540765 is a wasteful number, since it uses less digits than its factorization.

70540765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14108158.

The product of its (nonzero) digits is 29400, while the sum is 34.

The square root of 70540765 is about 8398.8549814841. The cubic root of 70540765 is about 413.1870692306.

The spelling of 70540765 in words is "seventy million, five hundred forty thousand, seven hundred sixty-five".