70321447 has 16 divisors (see below), whose sum is σ = 82547712. Its totient is φ = 58655520.

The previous prime is 70321439. The next prime is 70321487. The reversal of 70321447 is 74412307.

It is not a de Polignac number, because 70321447 - 2³ = 70321439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70321487) 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, 68913 + ... + 69925.

It is an arithmetic number, because the mean of its divisors is an integer number (5159232).

Almost surely, 2^70321447 is an apocalyptic number.

70321447 is a deficient number, since it is larger than the sum of its proper divisors (12226265).

70321447 is a wasteful number, since it uses less digits than its factorization.

70321447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 70321447 is about 8385.7883946591. The cubic root of 70321447 is about 412.7584119430.

The spelling of 70321447 in words is "seventy million, three hundred twenty-one thousand, four hundred forty-seven".