670077819 has 16 divisors (see below), whose sum is σ = 993127200. Its totient is φ = 446529888.

The previous prime is 670077773. The next prime is 670077829. The reversal of 670077819 is 918770076.

It is a happy number.

It is not a de Polignac number, because 670077819 - 2⁸ = 670077563 is a prime.

It is a super-2 number, since 2×670077819² = 898008567031593522, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (670077829) 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, 94117 + ... + 100985.

It is an arithmetic number, because the mean of its divisors is an integer number (62070450).

Almost surely, 2^670077819 is an apocalyptic number.

670077819 is a deficient number, since it is larger than the sum of its proper divisors (323049381).

670077819 is a wasteful number, since it uses less digits than its factorization.

670077819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10491 (or 10485 counting only the distinct ones).

The product of its (nonzero) digits is 148176, while the sum is 45.

The square root of 670077819 is about 25885.8613725717. The cubic root of 670077819 is about 875.0678887190.

The spelling of 670077819 in words is "six hundred seventy million, seventy-seven thousand, eight hundred nineteen".