70572645 has 72 divisors (see below), whose sum is σ = 144945528. Its totient is φ = 31553280.

The previous prime is 70572629. The next prime is 70572683. The reversal of 70572645 is 54627507.

70572645 is a `hidden beast` number, since 7 + 0 + 5 + 7 + 2 + 645 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 7322436 + 63250209 = 2706^2 + 7953^2 .

It is not a de Polignac number, because 70572645 - 2⁴ = 70572629 is a prime.

It is a congruent number.

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 70287 + ... + 71283.

Almost surely, 2^70572645 is an apocalyptic number.

It is an amenable number.

70572645 is an abundant number, since it is smaller than the sum of its proper divisors (74372883).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70572645 is a wasteful number, since it uses less digits than its factorization.

70572645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043 (or 1029 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The square root of 70572645 is about 8400.7526448527. The cubic root of 70572645 is about 413.2493047332.

It can be divided in two parts, 70572 and 645, that added together give a palindrome (71217).

The spelling of 70572645 in words is "seventy million, five hundred seventy-two thousand, six hundred forty-five".