61860747 has 16 divisors (see below), whose sum is σ = 89012000. Its totient is φ = 37988352.

The previous prime is 61860737. The next prime is 61860763. The reversal of 61860747 is 74706816.

It is not a de Polignac number, because 61860747 - 2¹⁰ = 61859723 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61860737) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21129 + ... + 23877.

It is an arithmetic number, because the mean of its divisors is an integer number (5563250).

Almost surely, 2^61860747 is an apocalyptic number.

61860747 is a deficient number, since it is larger than the sum of its proper divisors (27151253).

61860747 is a wasteful number, since it uses less digits than its factorization.

61860747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3342.

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 61860747 is about 7865.1603289444. The cubic root of 61860747 is about 395.4926225674.

The spelling of 61860747 in words is "sixty-one million, eight hundred sixty thousand, seven hundred forty-seven".