670347762421 has 4 divisors (see below), whose sum is σ = 685937245312. Its totient is φ = 654758279532.

The previous prime is 670347762419. The next prime is 670347762431. The reversal of 670347762421 is 124267743076.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 670347762421 - 2¹ = 670347762419 is a prime.

It is a super-3 number, since 3×670347762421³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670347762431) 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, 7794741381 + ... + 7794741466.

It is an arithmetic number, because the mean of its divisors is an integer number (171484311328).

Almost surely, 2^670347762421 is an apocalyptic number.

It is an amenable number.

670347762421 is a deficient number, since it is larger than the sum of its proper divisors (15589482891).

670347762421 is a wasteful number, since it uses less digits than its factorization.

670347762421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15589482890.

The product of its (nonzero) digits is 2370816, while the sum is 49.

The spelling of 670347762421 in words is "six hundred seventy billion, three hundred forty-seven million, seven hundred sixty-two thousand, four hundred twenty-one".