61964542 has 4 divisors (see below), whose sum is σ = 92946816. Its totient is φ = 30982270.

The previous prime is 61964537. The next prime is 61964543. The reversal of 61964542 is 24546916.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61964543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15491134 + ... + 15491137.

It is an arithmetic number, because the mean of its divisors is an integer number (23236704).

Almost surely, 2^61964542 is an apocalyptic number.

61964542 is a deficient number, since it is larger than the sum of its proper divisors (30982274).

61964542 is a wasteful number, since it uses less digits than its factorization.

61964542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30982273.

The product of its digits is 51840, while the sum is 37.

The square root of 61964542 is about 7871.7559667459. The cubic root of 61964542 is about 395.7136955473.

The spelling of 61964542 in words is "sixty-one million, nine hundred sixty-four thousand, five hundred forty-two".