70387513 has 8 divisors (see below), whose sum is σ = 81181760. Its totient is φ = 59778000.

The previous prime is 70387507. The next prime is 70387561. The reversal of 70387513 is 31578307.

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 70387513 - 2¹³ = 70379321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70387573) 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, 45363 + ... + 46888.

It is an arithmetic number, because the mean of its divisors is an integer number (10147720).

Almost surely, 2^70387513 is an apocalyptic number.

It is an amenable number.

70387513 is a deficient number, since it is larger than the sum of its proper divisors (10794247).

70387513 is a wasteful number, since it uses less digits than its factorization.

70387513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92367.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 70387513 is about 8389.7266344023. The cubic root of 70387513 is about 412.8876317053.

The spelling of 70387513 in words is "seventy million, three hundred eighty-seven thousand, five hundred thirteen".