70722405 has 48 divisors (see below), whose sum is σ = 134564976. Its totient is φ = 34145280.

The previous prime is 70722367. The next prime is 70722413. The reversal of 70722405 is 50422707.

It can be written as a sum of positive squares in 8 ways, for example, as 715716 + 70006689 = 846^2 + 8367^2 .

It is not a de Polignac number, because 70722405 - 2⁸ = 70722149 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 47 ways as a sum of consecutive naturals, for example, 29865 + ... + 32145.

It is an arithmetic number, because the mean of its divisors is an integer number (2803437).

Almost surely, 2^70722405 is an apocalyptic number.

It is an amenable number.

70722405 is a deficient number, since it is larger than the sum of its proper divisors (63842571).

70722405 is a wasteful number, since it uses less digits than its factorization.

70722405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2358 (or 2355 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 70722405 is about 8409.6614081662. The cubic root of 70722405 is about 413.5414126758.

The spelling of 70722405 in words is "seventy million, seven hundred twenty-two thousand, four hundred five".