67417561 has 4 divisors (see below), whose sum is σ = 67537872. Its totient is φ = 67297252.

The previous prime is 67417549. The next prime is 67417579. The reversal of 67417561 is 16571476.

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.

It is a cyclic number.

It is not a de Polignac number, because 67417561 - 2¹⁷ = 67286489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 67417561.

It is not an unprimeable number, because it can be changed into a prime (67417541) 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, 59311 + ... + 60436.

It is an arithmetic number, because the mean of its divisors is an integer number (16884468).

Almost surely, 2^67417561 is an apocalyptic number.

It is an amenable number.

67417561 is a deficient number, since it is larger than the sum of its proper divisors (120311).

67417561 is a wasteful number, since it uses less digits than its factorization.

67417561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120310.

The product of its digits is 35280, while the sum is 37.

The square root of 67417561 is about 8210.8197520101. The cubic root of 67417561 is about 406.9968165370.

The spelling of 67417561 in words is "sixty-seven million, four hundred seventeen thousand, five hundred sixty-one".