61961408 has 14 divisors (see below), whose sum is σ = 122954796. Its totient is φ = 30980672.

The previous prime is 61961407. The next prime is 61961423. The reversal of 61961408 is 80416916.

It is not an unprimeable number, because it can be changed into a prime (61961407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 484010 + ... + 484137.

Almost surely, 2^61961408 is an apocalyptic number.

It is an amenable number.

61961408 is a deficient number, since it is larger than the sum of its proper divisors (60993388).

61961408 is an equidigital number, since it uses as much as digits as its factorization.

61961408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968159 (or 968149 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 61961408 is about 7871.5568980984. The cubic root of 61961408 is about 395.7070240564.

The spelling of 61961408 in words is "sixty-one million, nine hundred sixty-one thousand, four hundred eight".