1706491047639 has 24 divisors (see below), whose sum is σ = 2671085057520. Its totient is φ = 966191514624.

The previous prime is 1706491047601. The next prime is 1706491047671. The reversal of 1706491047639 is 9367401946071.

It is not a de Polignac number, because 1706491047639 - 2¹⁵ = 1706491014871 is a prime.

It is a super-2 number, since 2×1706491047639² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1706491047739) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53235274 + ... + 53267319.

It is an arithmetic number, because the mean of its divisors is an integer number (111295210730).

Almost surely, 2^{1706491047639} is an apocalyptic number.

1706491047639 is a deficient number, since it is larger than the sum of its proper divisors (964594009881).

1706491047639 is a wasteful number, since it uses less digits than its factorization.

1706491047639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106502719 (or 106502712 counting only the distinct ones).

The product of its (nonzero) digits is 6858432, while the sum is 57.

The spelling of 1706491047639 in words is "one trillion, seven hundred six billion, four hundred ninety-one million, forty-seven thousand, six hundred thirty-nine".