61959902 has 4 divisors (see below), whose sum is σ = 92939856. Its totient is φ = 30979950.

The previous prime is 61959901. The next prime is 61959913. The reversal of 61959902 is 20995916.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 61959902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61959901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15489974 + ... + 15489977.

It is an arithmetic number, because the mean of its divisors is an integer number (23234964).

Almost surely, 2^61959902 is an apocalyptic number.

61959902 is a deficient number, since it is larger than the sum of its proper divisors (30979954).

61959902 is a wasteful number, since it uses less digits than its factorization.

61959902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30979953.

The product of its (nonzero) digits is 43740, while the sum is 41.

The square root of 61959902 is about 7871.4612366447. The cubic root of 61959902 is about 395.7038180845.

The spelling of 61959902 in words is "sixty-one million, nine hundred fifty-nine thousand, nine hundred two".