670246237 has 4 divisors (see below), whose sum is σ = 671918076. Its totient is φ = 668574400.

The previous prime is 670246219. The next prime is 670246259. The reversal of 670246237 is 732642076.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 533332836 + 136913401 = 23094^2 + 11701^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-670246237 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 670246196 and 670246205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670246207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 835318 + ... + 836119.

It is an arithmetic number, because the mean of its divisors is an integer number (167979519).

Almost surely, 2^670246237 is an apocalyptic number.

It is an amenable number.

670246237 is a deficient number, since it is larger than the sum of its proper divisors (1671839).

670246237 is a wasteful number, since it uses less digits than its factorization.

670246237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1671838.

The product of its (nonzero) digits is 84672, while the sum is 37.

The square root of 670246237 is about 25889.1142567682. The cubic root of 670246237 is about 875.1411960443.

The spelling of 670246237 in words is "six hundred seventy million, two hundred forty-six thousand, two hundred thirty-seven".