70221518 has 8 divisors (see below), whose sum is σ = 105608448. Its totient is φ = 35018704.

The previous prime is 70221497. The next prime is 70221539. The reversal of 70221518 is 81512207.

It is an interprime number because it is at equal distance from previous prime (70221497) and next prime (70221539).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45071 + ... + 46602.

It is an arithmetic number, because the mean of its divisors is an integer number (13201056).

Almost surely, 2^70221518 is an apocalyptic number.

70221518 is a deficient number, since it is larger than the sum of its proper divisors (35386930).

70221518 is a wasteful number, since it uses less digits than its factorization.

70221518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92058.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 70221518 is about 8379.8280411951. The cubic root of 70221518 is about 412.5628050071.

The spelling of 70221518 in words is "seventy million, two hundred twenty-one thousand, five hundred eighteen".