97720562 has 4 divisors (see below), whose sum is σ = 146580846. Its totient is φ = 48860280.

The previous prime is 97720561. The next prime is 97720577. The reversal of 97720562 is 26502779.

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

It can be written as a sum of positive squares in only one way, i.e., 94264681 + 3455881 = 9709^2 + 1859^2 .

It is not an unprimeable number, because it can be changed into a prime (97720561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24430139 + ... + 24430142.

Almost surely, 2^97720562 is an apocalyptic number.

97720562 is a deficient number, since it is larger than the sum of its proper divisors (48860284).

97720562 is a wasteful number, since it uses less digits than its factorization.

97720562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48860283.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 97720562 is about 9885.3711108891. The cubic root of 97720562 is about 460.6050041857.

The spelling of 97720562 in words is "ninety-seven million, seven hundred twenty thousand, five hundred sixty-two".