1670005215 has 16 divisors (see below), whose sum is σ = 2968898400. Its totient is φ = 890669376.

The previous prime is 1670005201. The next prime is 1670005243. The reversal of 1670005215 is 5125000761.

1670005215 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 1670005215 - 2¹² = 1670001119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6185070 + ... + 6185339.

It is an arithmetic number, because the mean of its divisors is an integer number (185556150).

Almost surely, 2^1670005215 is an apocalyptic number.

1670005215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1670005215 is a deficient number, since it is larger than the sum of its proper divisors (1298893185).

1670005215 is a wasteful number, since it uses less digits than its factorization.

1670005215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12370423 (or 12370417 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 1670005215 is about 40865.6972900255. The cubic root of 1670005215 is about 1186.4222308345.

Adding to 1670005215 its reverse (5125000761), we get a palindrome (6795005976).

The spelling of 1670005215 in words is "one billion, six hundred seventy million, five thousand, two hundred fifteen".