61339956 has 24 divisors (see below), whose sum is σ = 143340960. Its totient is φ = 20416032.

The previous prime is 61339951. The next prime is 61339963. The reversal of 61339956 is 65993316.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61339951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5410 + ... + 12326.

It is an arithmetic number, because the mean of its divisors is an integer number (5972540).

Almost surely, 2^61339956 is an apocalyptic number.

It is an amenable number.

61339956 is an abundant number, since it is smaller than the sum of its proper divisors (82001004).

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

61339956 is a wasteful number, since it uses less digits than its factorization.

61339956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7663 (or 7661 counting only the distinct ones).

The product of its digits is 131220, while the sum is 42.

The square root of 61339956 is about 7831.9828906861. The cubic root of 61339956 is about 394.3796404342.

The spelling of 61339956 in words is "sixty-one million, three hundred thirty-nine thousand, nine hundred fifty-six".