70705407 has 4 divisors (see below), whose sum is σ = 94273880. Its totient is φ = 47136936.

The previous prime is 70705399. The next prime is 70705429. The reversal of 70705407 is 70450707.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70450707 = 3 ⋅23483569.

It is not a de Polignac number, because 70705407 - 2³ = 70705399 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 (70705457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11784232 + ... + 11784237.

It is an arithmetic number, because the mean of its divisors is an integer number (23568470).

Almost surely, 2^70705407 is an apocalyptic number.

70705407 is a deficient number, since it is larger than the sum of its proper divisors (23568473).

70705407 is a wasteful number, since it uses less digits than its factorization.

70705407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23568472.

The product of its (nonzero) digits is 6860, while the sum is 30.

The square root of 70705407 is about 8408.6507241055. The cubic root of 70705407 is about 413.5082787151.

The spelling of 70705407 in words is "seventy million, seven hundred five thousand, four hundred seven".