70221478 has 8 divisors (see below), whose sum is σ = 107573472. Its totient is φ = 34363656.

The previous prime is 70221469. The next prime is 70221497. The reversal of 70221478 is 87412207.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 373425 + ... + 373612.

It is an arithmetic number, because the mean of its divisors is an integer number (13446684).

Almost surely, 2^70221478 is an apocalyptic number.

70221478 is a deficient number, since it is larger than the sum of its proper divisors (37351994).

70221478 is a wasteful number, since it uses less digits than its factorization.

70221478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747086.

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 70221478 is about 8379.8256545110. The cubic root of 70221478 is about 412.5627266716.

The spelling of 70221478 in words is "seventy million, two hundred twenty-one thousand, four hundred seventy-eight".