61988495 has 8 divisors (see below), whose sum is σ = 74817216. Its totient is φ = 49303456.

The previous prime is 61988489. The next prime is 61988501. The reversal of 61988495 is 59488916.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (61988489) and next prime (61988501).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61988495 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34967 + ... + 36696.

It is an arithmetic number, because the mean of its divisors is an integer number (9352152).

Almost surely, 2^61988495 is an apocalyptic number.

61988495 is a deficient number, since it is larger than the sum of its proper divisors (12828721).

61988495 is a wasteful number, since it uses less digits than its factorization.

61988495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71841.

The product of its digits is 622080, while the sum is 50.

The square root of 61988495 is about 7873.2772718862. The cubic root of 61988495 is about 395.7646779789.

Adding to 61988495 its sum of digits (50), we get a triangular number (61988545 = T₁₁₁₃₄).

The spelling of 61988495 in words is "sixty-one million, nine hundred eighty-eight thousand, four hundred ninety-five".