70084405 has 16 divisors (see below), whose sum is σ = 85638384. Its totient is φ = 55052800.

The previous prime is 70084373. The next prime is 70084409. The reversal of 70084405 is 50448007.

It can be written as a sum of positive squares in 8 ways, for example, as 762129 + 69322276 = 873^2 + 8326^2 .

It is not a de Polignac number, because 70084405 - 2⁵ = 70084373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70084409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68679 + ... + 69691.

It is an arithmetic number, because the mean of its divisors is an integer number (5352399).

Almost surely, 2^70084405 is an apocalyptic number.

It is an amenable number.

70084405 is a deficient number, since it is larger than the sum of its proper divisors (15553979).

70084405 is a wasteful number, since it uses less digits than its factorization.

70084405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 70084405 is about 8371.6429092503. The cubic root of 70084405 is about 412.2941096788.

The spelling of 70084405 in words is "seventy million, eighty-four thousand, four hundred five".