67809465 has 12 divisors (see below), whose sum is σ = 117536484. Its totient is φ = 36165024.

The previous prime is 67809457. The next prime is 67809487. The reversal of 67809465 is 56490876.

It can be written as a sum of positive squares in 2 ways, for example, as 42889401 + 24920064 = 6549^2 + 4992^2 .

It is not a de Polignac number, because 67809465 - 2³ = 67809457 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1506877 = 67809465 / (6 + 7 + 8 + 0 + 9 + 4 + 6 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 67809465.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 753394 + ... + 753483.

It is an arithmetic number, because the mean of its divisors is an integer number (9794707).

Almost surely, 2^67809465 is an apocalyptic number.

It is an amenable number.

67809465 is a deficient number, since it is larger than the sum of its proper divisors (49727019).

67809465 is a wasteful number, since it uses less digits than its factorization.

67809465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506888 (or 1506885 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 67809465 is about 8234.6502657976. The cubic root of 67809465 is about 407.7839289888.

The spelling of 67809465 in words is "sixty-seven million, eight hundred nine thousand, four hundred sixty-five".