61351768 has 16 divisors (see below), whose sum is σ = 116054280. Its totient is φ = 30403968.

The previous prime is 61351747. The next prime is 61351781. The reversal of 61351768 is 86715316.

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, 33030 + ... + 34837.

Almost surely, 2^61351768 is an apocalyptic number.

It is an amenable number.

61351768 is a deficient number, since it is larger than the sum of its proper divisors (54702512).

61351768 is a wasteful number, since it uses less digits than its factorization.

61351768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67986 (or 67982 counting only the distinct ones).

The product of its digits is 30240, while the sum is 37.

The square root of 61351768 is about 7832.7369418358. The cubic root of 61351768 is about 394.4049535342.

The spelling of 61351768 in words is "sixty-one million, three hundred fifty-one thousand, seven hundred sixty-eight".