61630687 has 8 divisors (see below), whose sum is σ = 63051776. Its totient is φ = 60224472.

The previous prime is 61630669. The next prime is 61630693. The reversal of 61630687 is 78603616.

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 61630687 - 2¹⁹ = 61106399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61630637) 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, 4888 + ... + 12130.

It is an arithmetic number, because the mean of its divisors is an integer number (7881472).

Almost surely, 2^61630687 is an apocalyptic number.

61630687 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

61630687 is a deficient number, since it is larger than the sum of its proper divisors (1421089).

61630687 is a wasteful number, since it uses less digits than its factorization.

61630687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7437.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 61630687 is about 7850.5214476492. The cubic root of 61630687 is about 395.0017347571.

The spelling of 61630687 in words is "sixty-one million, six hundred thirty thousand, six hundred eighty-seven".