61916547 has 54 divisors (see below), whose sum is σ = 107377284. Its totient is φ = 31619280.

The previous prime is 61916521. The next prime is 61916549. The reversal of 61916547 is 74561916.

It is not a de Polignac number, because 61916547 - 2⁸ = 61916291 is a prime.

Its product of digits (45360) is a multiple of the sum of its prime divisors (80).

It is not an unprimeable number, because it can be changed into a prime (61916549) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 1049404 + ... + 1049462.

Almost surely, 2^61916547 is an apocalyptic number.

61916547 is a deficient number, since it is larger than the sum of its proper divisors (45460737).

61916547 is a wasteful number, since it uses less digits than its factorization.

61916547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157 (or 80 counting only the distinct ones).

The product of its digits is 45360, while the sum is 39.

The square root of 61916547 is about 7868.7068187854. The cubic root of 61916547 is about 395.6115017020.

The spelling of 61916547 in words is "sixty-one million, nine hundred sixteen thousand, five hundred forty-seven".