70620705 has 12 divisors (see below), whose sum is σ = 122409300. Its totient is φ = 37664352.

The previous prime is 70620689. The next prime is 70620727. The reversal of 70620705 is 50702607.

It can be written as a sum of positive squares in 2 ways, for example, as 34187409 + 36433296 = 5847^2 + 6036^2 .

It is not a de Polignac number, because 70620705 - 2⁴ = 70620689 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 784630 + ... + 784719.

It is an arithmetic number, because the mean of its divisors is an integer number (10200775).

Almost surely, 2^70620705 is an apocalyptic number.

It is an amenable number.

70620705 is a deficient number, since it is larger than the sum of its proper divisors (51788595).

70620705 is a wasteful number, since it uses less digits than its factorization.

70620705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1569360 (or 1569357 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 70620705 is about 8403.6126160122. The cubic root of 70620705 is about 413.3430910952.

The spelling of 70620705 in words is "seventy million, six hundred twenty thousand, seven hundred five".