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1968961 = 2385607
BaseRepresentation
bin111100000101101000001
310201000220111
413200231001
51001001321
6110111321
722510261
oct7405501
93630814
101968961
111125345
127ab541
1353c287
143937a1
1528d5e1
hex1e0b41

1968961 has 4 divisors (see below), whose sum is σ = 2054592. Its totient is φ = 1883332.

The previous prime is 1968919. The next prime is 1968977. The reversal of 1968961 is 1698691.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1698691 = 1799923.

It is not a de Polignac number, because 1968961 - 213 = 1960769 is a prime.

1968961 is a strobogrammatic number because it is the same when read upside-down.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1968061) 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, 42781 + ... + 42826.

It is an arithmetic number, because the mean of its divisors is an integer number (513648).

21968961 is an apocalyptic number.

It is an amenable number.

1968961 is a deficient number, since it is larger than the sum of its proper divisors (85631).

1968961 is an equidigital number, since it uses as much as digits as its factorization.

1968961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85630.

The product of its digits is 23328, while the sum is 40.

The square root of 1968961 is about 1403.1967075218. The cubic root of 1968961 is about 125.3369256993.

The spelling of 1968961 in words is "one million, nine hundred sixty-eight thousand, nine hundred sixty-one".

Divisors: 1 23 85607 1968961