70734645 has 12 divisors (see below), whose sum is σ = 122606796. Its totient is φ = 37725120.

The previous prime is 70734641. The next prime is 70734649. The reversal of 70734645 is 54643707.

70734645 is a `hidden beast` number, since 7 + 0 + 7 + 3 + 4 + 645 = 666.

It is an interprime number because it is at equal distance from previous prime (70734641) and next prime (70734649).

It can be written as a sum of positive squares in 2 ways, for example, as 45724644 + 25010001 = 6762^2 + 5001^2 .

It is not a de Polignac number, because 70734645 - 2² = 70734641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70734641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 785896 + ... + 785985.

It is an arithmetic number, because the mean of its divisors is an integer number (10217233).

Almost surely, 2^70734645 is an apocalyptic number.

It is an amenable number.

70734645 is a deficient number, since it is larger than the sum of its proper divisors (51872151).

70734645 is a wasteful number, since it uses less digits than its factorization.

70734645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1571892 (or 1571889 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 36.

The square root of 70734645 is about 8410.3891110935. The cubic root of 70734645 is about 413.5652686467.

The spelling of 70734645 in words is "seventy million, seven hundred thirty-four thousand, six hundred forty-five".