70221477 has 16 divisors (see below), whose sum is σ = 94884480. Its totient is φ = 46190592.

The previous prime is 70221469. The next prime is 70221497. The reversal of 70221477 is 77412207.

It is not a de Polignac number, because 70221477 - 2³ = 70221469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70221497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121413 + ... + 121989.

It is an arithmetic number, because the mean of its divisors is an integer number (5930280).

Almost surely, 2^70221477 is an apocalyptic number.

It is an amenable number.

70221477 is a deficient number, since it is larger than the sum of its proper divisors (24663003).

70221477 is a wasteful number, since it uses less digits than its factorization.

70221477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052.

The product of its (nonzero) digits is 5488, while the sum is 30.

The square root of 70221477 is about 8379.8255948438. The cubic root of 70221477 is about 412.5627247132.

The spelling of 70221477 in words is "seventy million, two hundred twenty-one thousand, four hundred seventy-seven".