61289499 has 8 divisors (see below), whose sum is σ = 84537360. Its totient is φ = 39450656.

The previous prime is 61289483. The next prime is 61289507. The reversal of 61289499 is 99498216.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61289499 - 2⁴ = 61289483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61289419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 352152 + ... + 352325.

It is an arithmetic number, because the mean of its divisors is an integer number (10567170).

Almost surely, 2^61289499 is an apocalyptic number.

61289499 is a deficient number, since it is larger than the sum of its proper divisors (23247861).

61289499 is a wasteful number, since it uses less digits than its factorization.

61289499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704509.

The product of its digits is 279936, while the sum is 48.

The square root of 61289499 is about 7828.7610130850. The cubic root of 61289499 is about 394.2714745472.

The spelling of 61289499 in words is "sixty-one million, two hundred eighty-nine thousand, four hundred ninety-nine".