61913499 has 8 divisors (see below), whose sum is σ = 82782720. Its totient is φ = 41159976.

The previous prime is 61913483. The next prime is 61913503. The reversal of 61913499 is 99431916.

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

It is not a de Polignac number, because 61913499 - 2⁴ = 61913483 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61913499.

It is not an unprimeable number, because it can be changed into a prime (61913399) 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, 27667 + ... + 29820.

It is an arithmetic number, because the mean of its divisors is an integer number (10347840).

Almost surely, 2^61913499 is an apocalyptic number.

61913499 is a deficient number, since it is larger than the sum of its proper divisors (20869221).

61913499 is a wasteful number, since it uses less digits than its factorization.

61913499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57849.

The product of its digits is 52488, while the sum is 42.

The square root of 61913499 is about 7868.5131378171. The cubic root of 61913499 is about 395.6050099336.

The spelling of 61913499 in words is "sixty-one million, nine hundred thirteen thousand, four hundred ninety-nine".