70520737 has 8 divisors (see below), whose sum is σ = 84099456. Its totient is φ = 57818112.

The previous prime is 70520729. The next prime is 70520741. The reversal of 70520737 is 73702507.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70520737 - 2³ = 70520729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 70520699 and 70520708.

It is not an unprimeable number, because it can be changed into a prime (70520707) 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 7 ways as a sum of consecutive naturals, for example, 218848 + ... + 219169.

It is an arithmetic number, because the mean of its divisors is an integer number (10512432).

Almost surely, 2^70520737 is an apocalyptic number.

It is an amenable number.

70520737 is a deficient number, since it is larger than the sum of its proper divisors (13578719).

70520737 is a wasteful number, since it uses less digits than its factorization.

70520737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438047.

The product of its (nonzero) digits is 10290, while the sum is 31.

The square root of 70520737 is about 8397.6625914596. The cubic root of 70520737 is about 413.1479613761.

The spelling of 70520737 in words is "seventy million, five hundred twenty thousand, seven hundred thirty-seven".