407020705 has 48 divisors (see below), whose sum is σ = 625121280. Its totient is φ = 252056448.

The previous prime is 407020697. The next prime is 407020711. The reversal of 407020705 is 507020704.

It is not a de Polignac number, because 407020705 - 2³ = 407020697 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 407020705.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 148336 + ... + 151054.

It is an arithmetic number, because the mean of its divisors is an integer number (13023360).

Almost surely, 2^407020705 is an apocalyptic number.

It is an amenable number.

407020705 is a deficient number, since it is larger than the sum of its proper divisors (218100575).

407020705 is a wasteful number, since it uses less digits than its factorization.

407020705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2798 (or 2791 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 407020705 is about 20174.7541496792. The cubic root of 407020705 is about 741.0920721194.

Subtracting 407020705 from its reverse (507020704), we obtain a palindrome (99999999).

The spelling of 407020705 in words is "four hundred seven million, twenty thousand, seven hundred five".