70073641 has 9 divisors (see below), whose sum is σ = 77124439. Its totient is φ = 63619600.

The previous prime is 70073629. The next prime is 70073659. The reversal of 70073641 is 14637007.

The square root of 70073641 is 8371.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 184041 + 69889600 = 429^2 + 8360^2 .

It is not a de Polignac number, because 70073641 - 2¹⁷ = 69942569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70073041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 91701 + ... + 92461.

Almost surely, 2^70073641 is an apocalyptic number.

70073641 is the 8371-st square number.

70073641 is the 4186-th centered octagonal number.

It is an amenable number.

70073641 is a deficient number, since it is larger than the sum of its proper divisors (7050798).

70073641 is an frugal number, since it uses more digits than its factorization.

70073641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1544 (or 772 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 28.

The cubic root of 70073641 is about 412.2730010312.

It can be divided in two parts, 7007 and 3641, that added together give a cube (10648 = 22³).

The spelling of 70073641 in words is "seventy million, seventy-three thousand, six hundred forty-one".