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1690007 = 11213967
BaseRepresentation
bin110011100100110010111
310011212020212
412130212113
5413040012
6100120035
720236064
oct6344627
93155225
101690007
11a54800
1269601b
13472307
1431dc6b
15235b22
hex19c997

1690007 has 6 divisors (see below), whose sum is σ = 1857744. Its totient is φ = 1536260.

The previous prime is 1689967. The next prime is 1690009. The reversal of 1690007 is 7000961.

It is a happy number.

It is not a de Polignac number, because 1690007 - 212 = 1685911 is a prime.

It is a super-2 number, since 2×16900072 = 5712247320098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1690009) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6863 + ... + 7104.

It is an arithmetic number, because the mean of its divisors is an integer number (309624).

21690007 is an apocalyptic number.

1690007 is a deficient number, since it is larger than the sum of its proper divisors (167737).

1690007 is a wasteful number, since it uses less digits than its factorization.

1690007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13989 (or 13978 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 1690007 is about 1300.0026923049. The cubic root of 1690007 is about 119.1140069764.

Adding to 1690007 its reverse (7000961), we get a palindrome (8690968).

The spelling of 1690007 in words is "one million, six hundred ninety thousand, seven".

Divisors: 1 11 121 13967 153637 1690007