61868788 has 12 divisors (see below), whose sum is σ = 113968960. Its totient is φ = 29306232.

The previous prime is 61868759. The next prime is 61868809. The reversal of 61868788 is 88786816.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 406956 + ... + 407107.

Almost surely, 2^61868788 is an apocalyptic number.

It is an amenable number.

61868788 is a deficient number, since it is larger than the sum of its proper divisors (52100172).

61868788 is a wasteful number, since it uses less digits than its factorization.

61868788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814086 (or 814084 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 52.

The square root of 61868788 is about 7865.6714907247. The cubic root of 61868788 is about 395.5097579267.

The spelling of 61868788 in words is "sixty-one million, eight hundred sixty-eight thousand, seven hundred eighty-eight".