61964297 has 4 divisors (see below), whose sum is σ = 62162580. Its totient is φ = 61766016.

The previous prime is 61964291. The next prime is 61964299. The reversal of 61964297 is 79246916.

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

It can be written as a sum of positive squares in 2 ways, for example, as 952576 + 61011721 = 976^2 + 7811^2 .

It is a cyclic number.

It is not a de Polignac number, because 61964297 - 2⁴ = 61964281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61964291) 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, 98672 + ... + 99297.

It is an arithmetic number, because the mean of its divisors is an integer number (15540645).

Almost surely, 2^61964297 is an apocalyptic number.

It is an amenable number.

61964297 is a deficient number, since it is larger than the sum of its proper divisors (198283).

61964297 is a wasteful number, since it uses less digits than its factorization.

61964297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198282.

The product of its digits is 163296, while the sum is 44.

The square root of 61964297 is about 7871.7404047644. The cubic root of 61964297 is about 395.7131740125.

The spelling of 61964297 in words is "sixty-one million, nine hundred sixty-four thousand, two hundred ninety-seven".