61009996 has 12 divisors (see below), whose sum is σ = 108782352. Its totient is φ = 29929328.

The previous prime is 61009979. The next prime is 61010021. The reversal of 61009996 is 69990016.

It is a super-2 number, since 2×61009996² = 7444439223840032, which contains 22 as substring.

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, 143680 + ... + 144103.

It is an arithmetic number, because the mean of its divisors is an integer number (9065196).

Almost surely, 2^61009996 is an apocalyptic number.

It is an amenable number.

61009996 is a deficient number, since it is larger than the sum of its proper divisors (47772356).

61009996 is a wasteful number, since it uses less digits than its factorization.

61009996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287840 (or 287838 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 40.

The square root of 61009996 is about 7810.8895780186. The cubic root of 61009996 is about 393.6712194450.

The spelling of 61009996 in words is "sixty-one million, nine thousand, nine hundred ninety-six".