1970405 has 16 divisors (see below), whose sum is σ = 2488320. Its totient is φ = 1495872.

The previous prime is 1970401. The next prime is 1970407. The reversal of 1970405 is 5040791.

It is a cyclic number.

It is not a de Polignac number, because 1970405 - 2² = 1970401 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1970401) 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, 15452 + ... + 15578.

It is an arithmetic number, because the mean of its divisors is an integer number (155520).

2^1970405 is an apocalyptic number.

It is an amenable number.

1970405 is a deficient number, since it is larger than the sum of its proper divisors (517915).

1970405 is a wasteful number, since it uses less digits than its factorization.

1970405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 1970405 is about 1403.7111526236. The cubic root of 1970405 is about 125.3675581487.

The spelling of 1970405 in words is "one million, nine hundred seventy thousand, four hundred five".