70515705 has 32 divisors (see below), whose sum is σ = 123814656. Its totient is φ = 34055424.

The previous prime is 70515703. The next prime is 70515713. The reversal of 70515705 is 50751507.

It is not a de Polignac number, because 70515705 - 2¹ = 70515703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70515703) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6924 + ... + 13746.

It is an arithmetic number, because the mean of its divisors is an integer number (3869208).

Almost surely, 2^70515705 is an apocalyptic number.

It is an amenable number.

70515705 is a deficient number, since it is larger than the sum of its proper divisors (53298951).

70515705 is a wasteful number, since it uses less digits than its factorization.

70515705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6897.

The product of its (nonzero) digits is 6125, while the sum is 30.

The square root of 70515705 is about 8397.3629789357. The cubic root of 70515705 is about 413.1381344321.

The spelling of 70515705 in words is "seventy million, five hundred fifteen thousand, seven hundred five".