70578965 has 4 divisors (see below), whose sum is σ = 84694764. Its totient is φ = 56463168.

The previous prime is 70578961. The next prime is 70579021. The reversal of 70578965 is 56987507.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56987507 = 2347 ⋅24281.

It can be written as a sum of positive squares in 2 ways, for example, as 13410244 + 57168721 = 3662^2 + 7561^2 .

It is a cyclic number.

It is not a de Polignac number, because 70578965 - 2² = 70578961 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70578961) 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, 7057892 + ... + 7057901.

It is an arithmetic number, because the mean of its divisors is an integer number (21173691).

Almost surely, 2^70578965 is an apocalyptic number.

It is an amenable number.

70578965 is a deficient number, since it is larger than the sum of its proper divisors (14115799).

70578965 is a wasteful number, since it uses less digits than its factorization.

70578965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14115798.

The product of its (nonzero) digits is 529200, while the sum is 47.

The square root of 70578965 is about 8401.1287932039. The cubic root of 70578965 is about 413.2616402855.

The spelling of 70578965 in words is "seventy million, five hundred seventy-eight thousand, nine hundred sixty-five".