61196640 has 48 divisors (see below), whose sum is σ = 192770928. Its totient is φ = 16318976.

The previous prime is 61196623. The next prime is 61196657. The reversal of 61196640 is 4669116.

It is an interprime number because it is at equal distance from previous prime (61196623) and next prime (61196657).

It is a tau number, because it is divible by the number of its divisors (48).

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, 63267 + ... + 64226.

It is an arithmetic number, because the mean of its divisors is an integer number (4016061).

Almost surely, 2^61196640 is an apocalyptic number.

61196640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61196640 is an abundant number, since it is smaller than the sum of its proper divisors (131574288).

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

61196640 is a wasteful number, since it uses less digits than its factorization.

61196640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127511 (or 127503 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 61196640 is about 7822.8281330987. The cubic root of 61196640 is about 394.0722552085.

The spelling of 61196640 in words is "sixty-one million, one hundred ninety-six thousand, six hundred forty".