61699632 has 80 divisors (see below), whose sum is σ = 164989440. Its totient is φ = 19858176.

The previous prime is 61699621. The next prime is 61699633. The reversal of 61699632 is 23699616.

It is not an unprimeable number, because it can be changed into a prime (61699633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200823 + ... + 201129.

It is an arithmetic number, because the mean of its divisors is an integer number (2062368).

Almost surely, 2^61699632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61699632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82494720).

61699632 is an abundant number, since it is smaller than the sum of its proper divisors (103289808).

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

61699632 is a wasteful number, since it uses less digits than its factorization.

61699632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450 (or 444 counting only the distinct ones).

The product of its digits is 104976, while the sum is 42.

The square root of 61699632 is about 7854.9113298624. The cubic root of 61699632 is about 395.1489733438.

The spelling of 61699632 in words is "sixty-one million, six hundred ninety-nine thousand, six hundred thirty-two".