670220734 has 4 divisors (see below), whose sum is σ = 1005331104. Its totient is φ = 335110366.

The previous prime is 670220731. The next prime is 670220777. The reversal of 670220734 is 437022076.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 670220696 and 670220705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670220731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167555182 + ... + 167555185.

It is an arithmetic number, because the mean of its divisors is an integer number (251332776).

Almost surely, 2^670220734 is an apocalyptic number.

670220734 is a deficient number, since it is larger than the sum of its proper divisors (335110370).

670220734 is a wasteful number, since it uses less digits than its factorization.

670220734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335110369.

The product of its (nonzero) digits is 14112, while the sum is 31.

The square root of 670220734 is about 25888.6217091602. The cubic root of 670220734 is about 875.1300961392.

The spelling of 670220734 in words is "six hundred seventy million, two hundred twenty thousand, seven hundred thirty-four".