70520063 has 4 divisors (see below), whose sum is σ = 74668320. Its totient is φ = 66371808.

The previous prime is 70520059. The next prime is 70520081. The reversal of 70520063 is 36002507.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 70520063 - 2² = 70520059 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 (70520003) 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, 2074103 + ... + 2074136.

It is an arithmetic number, because the mean of its divisors is an integer number (18667080).

Almost surely, 2^70520063 is an apocalyptic number.

70520063 is a deficient number, since it is larger than the sum of its proper divisors (4148257).

70520063 is a wasteful number, since it uses less digits than its factorization.

70520063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4148256.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 70520063 is about 8397.6224611493. The cubic root of 70520063 is about 413.1466451551.

The spelling of 70520063 in words is "seventy million, five hundred twenty thousand, sixty-three".