70650405 has 54 divisors (see below), whose sum is σ = 143254566. Its totient is φ = 32116896.

The previous prime is 70650403. The next prime is 70650413. The reversal of 70650405 is 50405607.

70650405 is a `hidden beast` number, since 7 + 0 + 650 + 4 + 0 + 5 = 666.

It can be written as a sum of positive squares in only one way, i.e., 56520324 + 14130081 = 7518^2 + 3759^2 .

It is not a de Polignac number, because 70650405 - 2¹ = 70650403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70650403) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 394606 + ... + 394784.

Almost surely, 2^70650405 is an apocalyptic number.

It is an amenable number.

70650405 is an abundant number, since it is smaller than the sum of its proper divisors (72604161).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70650405 is a wasteful number, since it uses less digits than its factorization.

70650405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 70650405 is about 8405.3795274217. The cubic root of 70650405 is about 413.4010276888.

The spelling of 70650405 in words is "seventy million, six hundred fifty thousand, four hundred five".