1670405355 has 64 divisors (see below), whose sum is σ = 3017710080. Its totient is φ = 876580992.

The previous prime is 1670405327. The next prime is 1670405357. The reversal of 1670405355 is 5535040761.

1670405355 is a `hidden beast` number, since 16 + 70 + 40 + 535 + 5 = 666.

1670405355 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1670405355 - 2⁵ = 1670405323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1670405357) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2845372 + ... + 2845958.

It is an arithmetic number, because the mean of its divisors is an integer number (47151720).

Almost surely, 2^1670405355 is an apocalyptic number.

1670405355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1670405355 is a deficient number, since it is larger than the sum of its proper divisors (1347304725).

1670405355 is a wasteful number, since it uses less digits than its factorization.

1670405355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905 (or 899 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 36.

The square root of 1670405355 is about 40870.5927899266. The cubic root of 1670405355 is about 1186.5169804548.

The spelling of 1670405355 in words is "one billion, six hundred seventy million, four hundred five thousand, three hundred fifty-five".