70655645 has 8 divisors (see below), whose sum is σ = 84838104. Its totient is φ = 56490304.

The previous prime is 70655639. The next prime is 70655647. The reversal of 70655645 is 54655607.

It can be written as a sum of positive squares in 4 ways, for example, as 16176484 + 54479161 = 4022^2 + 7381^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70655645 - 2¹⁰ = 70654621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70655599 and 70655608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70655647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8027 + ... + 14343.

It is an arithmetic number, because the mean of its divisors is an integer number (10604763).

Almost surely, 2^70655645 is an apocalyptic number.

It is an amenable number.

70655645 is a deficient number, since it is larger than the sum of its proper divisors (14182459).

70655645 is a wasteful number, since it uses less digits than its factorization.

70655645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8559.

The product of its (nonzero) digits is 126000, while the sum is 38.

The square root of 70655645 is about 8405.6912267820. The cubic root of 70655645 is about 413.4112478134.

Subtracting from 70655645 its sum of digits (38), we obtain a palindrome (70655607).

The spelling of 70655645 in words is "seventy million, six hundred fifty-five thousand, six hundred forty-five".