61685016 has 32 divisors (see below), whose sum is σ = 155808240. Its totient is φ = 20348928.

The previous prime is 61684991. The next prime is 61685023. The reversal of 61685016 is 61058616.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10921 + ... + 15576.

Almost surely, 2^61685016 is an apocalyptic number.

It is an amenable number.

61685016 is an abundant number, since it is smaller than the sum of its proper divisors (94123224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61685016 is a wasteful number, since it uses less digits than its factorization.

61685016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26603 (or 26599 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 61685016 is about 7853.9809014283. The cubic root of 61685016 is about 395.1177686547.

The spelling of 61685016 in words is "sixty-one million, six hundred eighty-five thousand, sixteen".