61958913 has 16 divisors (see below), whose sum is σ = 84926016. Its totient is φ = 40156160.

The previous prime is 61958903. The next prime is 61958921. The reversal of 61958913 is 31985916.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61958913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61958903) 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, 42706 + ... + 44132.

It is an arithmetic number, because the mean of its divisors is an integer number (5307876).

Almost surely, 2^61958913 is an apocalyptic number.

It is an amenable number.

61958913 is a deficient number, since it is larger than the sum of its proper divisors (22967103).

61958913 is a wasteful number, since it uses less digits than its factorization.

61958913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1824.

The product of its digits is 58320, while the sum is 42.

The square root of 61958913 is about 7871.3984145131. The cubic root of 61958913 is about 395.7017126736.

The spelling of 61958913 in words is "sixty-one million, nine hundred fifty-eight thousand, nine hundred thirteen".