61450691 has 4 divisors (see below), whose sum is σ = 62610192. Its totient is φ = 60291192.

The previous prime is 61450679. The next prime is 61450709. The reversal of 61450691 is 19605416.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61450691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61450651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 579671 + ... + 579776.

It is an arithmetic number, because the mean of its divisors is an integer number (15652548).

Almost surely, 2^61450691 is an apocalyptic number.

61450691 is a deficient number, since it is larger than the sum of its proper divisors (1159501).

61450691 is a wasteful number, since it uses less digits than its factorization.

61450691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1159500.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 61450691 is about 7839.0491132535. The cubic root of 61450691 is about 394.6168179555.

The spelling of 61450691 in words is "sixty-one million, four hundred fifty thousand, six hundred ninety-one".