690872173045 has 32 divisors (see below), whose sum is σ = 842566074624. Its totient is φ = 543760896000.

The previous prime is 690872173031. The next prime is 690872173093. The reversal of 690872173045 is 540371278096.

It is not a de Polignac number, because 690872173045 - 2¹⁷ = 690872041973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 690872172983 and 690872173001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95804490 + ... + 95811700.

It is an arithmetic number, because the mean of its divisors is an integer number (26330189832).

It is a 1-persistent number, because it is pandigital, but 2⋅690872173045 = 1381744346090 is not.

Almost surely, 2^690872173045 is an apocalyptic number.

It is an amenable number.

690872173045 is a deficient number, since it is larger than the sum of its proper divisors (151693901579).

690872173045 is a wasteful number, since it uses less digits than its factorization.

690872173045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8493.

The product of its (nonzero) digits is 2540160, while the sum is 52.

The spelling of 690872173045 in words is "six hundred ninety billion, eight hundred seventy-two million, one hundred seventy-three thousand, forty-five".